diff --git a/addons/account/views/account_invoice_view.xml b/addons/account/views/account_invoice_view.xml
index d22030ce7c4..2160872d84a 100644
--- a/addons/account/views/account_invoice_view.xml
+++ b/addons/account/views/account_invoice_view.xml
@@ -273,7 +273,7 @@
                                     <field name="uom_id" groups="product.group_uom"/>
                                     <field name="price_unit"/>
                                     <field name="discount" groups="base.group_no_one"/>
-                                    <field name="invoice_line_tax_ids" widget="many2many_tags" options="{'color_field': 'color', 'no_create': True}" context="{'type':parent.type}"
+                                    <field name="invoice_line_tax_ids" widget="many2many_tags" options="{'no_create': True}" context="{'type':parent.type}"
                                         domain="[('type_tax_use','=','purchase'),('company_id', '=', parent.company_id)]"/>
                                     <field name="price_subtotal"/>
                                     <field name="currency_id" invisible="1"/>
@@ -409,7 +409,7 @@
                                     <field name="uom_id" groups="product.group_uom"/>
                                     <field name="price_unit"/>
                                     <field name="discount" groups="base.group_no_one"/>
-                                    <field name="invoice_line_tax_ids" widget="many2many_tags" options="{'color_field': 'color', 'no_create': True}" context="{'type':parent.type}"
+                                    <field name="invoice_line_tax_ids" widget="many2many_tags" options="{'no_create': True}" context="{'type':parent.type}"
                                         domain="[('type_tax_use','=','sale'),('company_id', '=', parent.company_id)]"/>
                                     <field name="price_subtotal"/>
                                     <field name="currency_id" invisible="1"/>
diff --git a/addons/account/views/account_view.xml b/addons/account/views/account_view.xml
index 8a23e35a578..134ce6f5e04 100644
--- a/addons/account/views/account_view.xml
+++ b/addons/account/views/account_view.xml
@@ -261,8 +261,8 @@
                                 <group>
                                     <group string="Control-Access" groups="base.group_no_one">
                                         <div class="text-muted" colspan="2">Keep empty for no control</div>
-                                        <field name="type_control_ids" widget="many2many_tags" options="{'color_field': 'color'}"/>
-                                        <field name="account_control_ids" widget="many2many_tags" options="{'color_field': 'color'}"/>
+                                        <field name="type_control_ids" widget="many2many_tags"/>
+                                        <field name="account_control_ids" widget="many2many_tags"/>
                                     </group>
                                     <group string="Miscellaneous">
                                         <field name="inbound_payment_method_ids" widget="many2many_checkboxes" attrs="{'invisible': [('type', 'not in', ['bank', 'cash'])]}"/>
@@ -1892,8 +1892,8 @@
                     <field name="name"/>
                     <field name="attribute_value_ids" widget="many2many_tags" groups="product.group_product_variant"/>
                     <field name="lst_price"/>
-                    <field name="taxes_id" widget="many2many_tags" options="{'color_field': 'color'}"/>
-                    <field name="supplier_taxes_id" widget="many2many_tags" options="{'color_field': 'color'}"/>
+                    <field name="taxes_id" widget="many2many_tags"/>
+                    <field name="supplier_taxes_id" widget="many2many_tags"/>
                 </tree>
             </field>
         </record>
diff --git a/addons/account/views/product_view.xml b/addons/account/views/product_view.xml
index 6543d318260..5dc56426ed3 100644
--- a/addons/account/views/product_view.xml
+++ b/addons/account/views/product_view.xml
@@ -14,13 +14,13 @@
                                 <field name="property_account_income_id"
                                     domain="[('internal_type','=','other'),('deprecated','=',False)]"
                                     groups="account.group_account_user"/>
-                                <field name="taxes_id" widget="many2many_tags" options="{'color_field': 'color'}"/>
+                                <field name="taxes_id" widget="many2many_tags"/>
                             </group>
                             <group>
                                 <field name="property_account_expense_id"
                                     domain="[('internal_type','=','other'),('deprecated','=',False)]"
                                     groups="account.group_account_user"/>
-                                <field name="supplier_taxes_id" widget="many2many_tags" options="{'color_field': 'color'}"/>
+                                <field name="supplier_taxes_id" widget="many2many_tags"/>
                             </group>
                         </group>
                         <group name="accounting"/>
diff --git a/addons/account_voucher/views/account_voucher_views.xml b/addons/account_voucher/views/account_voucher_views.xml
index ea279a24be2..ced7d16a4ef 100644
--- a/addons/account_voucher/views/account_voucher_views.xml
+++ b/addons/account_voucher/views/account_voucher_views.xml
@@ -253,7 +253,7 @@
                                     <field name="account_analytic_id" domain="[('company_id', '=', parent.company_id)]" groups="analytic.group_analytic_accounting"/>
                                     <field name="quantity"/>
                                     <field name="price_unit"/>
-                                    <field name="tax_ids" widget="many2many_tags" options="{'color_field': 'color'}" domain="[('type_tax_use','=','sale')]"/>
+                                    <field name="tax_ids" widget="many2many_tags" domain="[('type_tax_use','=','sale')]"/>
                                     <field name="price_subtotal"/>
                                     <field name="currency_id" invisible="1"/>
                                     <field name="company_id" invisible="1"/>
@@ -369,7 +369,7 @@
                                     <field name="account_analytic_id" domain="[('company_id', '=', parent.company_id)]" groups="analytic.group_analytic_accounting"/>
                                     <field name="quantity"/>
                                     <field name="price_unit"/>
-                                    <field name="tax_ids" widget="many2many_tags" options="{'color_field': 'color'}" domain="[('type_tax_use','=','purchase')]"/>
+                                    <field name="tax_ids" widget="many2many_tags" domain="[('type_tax_use','=','purchase')]"/>
                                     <field name="price_subtotal"/>
                                     <field name="currency_id" invisible="1"/>
                                     <field name="company_id" invisible="1"/>
diff --git a/addons/delivery/views/delivery_view.xml b/addons/delivery/views/delivery_view.xml
index 2bc610a97e8..0148319cb26 100644
--- a/addons/delivery/views/delivery_view.xml
+++ b/addons/delivery/views/delivery_view.xml
@@ -107,8 +107,8 @@
                                 </group>
                                 <group>
                                     <group>
-                                        <field name="country_ids" widget="many2many_tags" options="{'color_field': 'color'}"/>
-                                        <field name="state_ids" widget="many2many_tags" options="{'color_field': 'color'}"/>
+                                        <field name="country_ids" widget="many2many_tags"/>
+                                        <field name="state_ids" widget="many2many_tags"/>
                                     </group>
                                     <group></group>
                                     <group>
diff --git a/addons/hr_expense/views/hr_expense_views.xml b/addons/hr_expense/views/hr_expense_views.xml
index 7ede7d1efb7..baa339238a2 100644
--- a/addons/hr_expense/views/hr_expense_views.xml
+++ b/addons/hr_expense/views/hr_expense_views.xml
@@ -299,7 +299,7 @@
                             </group>
                             <group string="Accounting">
                                 <field name="property_account_expense_id"/>
-                                <field name="supplier_taxes_id" widget="many2many_tags" options="{'color_field': 'color'}"/>
+                                <field name="supplier_taxes_id" widget="many2many_tags"/>
                             </group>
                         </group>
                     </sheet>
@@ -464,7 +464,7 @@
                                 <field name="message_unread" invisible="1"/>
                                 <field name="attachment_number" string=" "/>
                                 <button name="action_get_attachment_view" string="View Attachments" type="object" icon="fa-paperclip"/>
-                                <field name="tax_ids" widget="many2many_tags" options="{'color_field': 'color'}"/>
+                                <field name="tax_ids" widget="many2many_tags"/>
                                 <field name="total_amount" sum="Total Amount" widget="monetary"/>
                            </tree>
                         </field>
diff --git a/addons/mass_mailing/views/mass_mailing_views.xml b/addons/mass_mailing/views/mass_mailing_views.xml
index 757b09ebfe6..7050b36a2bf 100644
--- a/addons/mass_mailing/views/mass_mailing_views.xml
+++ b/addons/mass_mailing/views/mass_mailing_views.xml
@@ -355,7 +355,7 @@
                                     context="{'search_default_not_opt_out':1}"/>
                                 <div attrs="{'invisible': [('mailing_model', '!=', 'mail.mass_mailing.list')]}">
                                     <label for="contact_list_ids" string="Select mailing lists:" class="oe_edit_only"/>
-                                    <field name="contact_list_ids" widget="many2many_tags" options="{'color_field': 'color'}"
+                                    <field name="contact_list_ids" widget="many2many_tags"
                                         placeholder="Select mailing lists..." class="oe_inline"/>
                                 </div>
                             </div>
diff --git a/addons/membership/views/product_views.xml b/addons/membership/views/product_views.xml
index e1509fce416..9651e2aa381 100644
--- a/addons/membership/views/product_views.xml
+++ b/addons/membership/views/product_views.xml
@@ -68,7 +68,7 @@
                             <field name="list_price" string="Membership Fee"/>
                             <field
                                 name="property_account_income_id"/>
-                            <field name="taxes_id" widget="many2many_tags" options="{'color_field': 'color'}" string="Taxes"/>
+                            <field name="taxes_id" widget="many2many_tags" string="Taxes"/>
                         </group>
                     </group>
                     <label for="description"/>
diff --git a/addons/mrp/views/mrp_bom_views.xml b/addons/mrp/views/mrp_bom_views.xml
index 91d97018310..d4b839c69f1 100644
--- a/addons/mrp/views/mrp_bom_views.xml
+++ b/addons/mrp/views/mrp_bom_views.xml
@@ -47,7 +47,7 @@
                                     <button name="action_see_attachments" type="object" icon="fa-file" attrs="{'invisible': [('has_attachments', '=', True)]}"/>
                                     <field name="product_qty"/>
                                     <field name="product_uom_id" options="{'no_open':True,'no_create':True}" groups="product.group_uom"/>
-                                    <field name="attribute_value_ids" widget="many2many_tags" options="{'color_field': 'color', 'no_create': True}" domain="[('product_ids.product_tmpl_id', '=', parent.product_tmpl_id)]" groups="product.group_product_variant"/>
+                                    <field name="attribute_value_ids" widget="many2many_tags" options="{'no_create': True}" domain="[('product_ids.product_tmpl_id', '=', parent.product_tmpl_id)]" groups="product.group_product_variant"/>
                                     <field name="operation_id" groups="mrp.group_mrp_routings" domain="[('routing_id', '=', parent.routing_id)]" options="{'no_quick_create':True,'no_create_edit':True}"/>
                                 </tree>
                             </field>
diff --git a/addons/mrp_repair/views/mrp_repair_views.xml b/addons/mrp_repair/views/mrp_repair_views.xml
index 9a4cd6d75b2..505f2d3abec 100644
--- a/addons/mrp_repair/views/mrp_repair_views.xml
+++ b/addons/mrp_repair/views/mrp_repair_views.xml
@@ -89,7 +89,7 @@
                                                 </div>
                                                 <field name="type" invisible="1"/>
                                                 <field name="price_unit"/>
-                                                <field name="tax_id" widget="many2many_tags" options="{'color_field': 'color'}" domain="[('type_tax_use','=','sale')]"/>
+                                                <field name="tax_id" widget="many2many_tags" domain="[('type_tax_use','=','sale')]"/>
                                                 <field name="invoiced" invisible="1"/>
                                                 <field name="price_subtotal" widget="monetary" invisible="1"/>
                                             </group>
@@ -117,7 +117,7 @@
                                 <field name="product_uom_qty" string="Quantity"/>
                                 <field name="product_uom" string="Unit of Measure" groups="product.group_uom"/>
                                 <field name="price_unit"/>
-                                <field name="tax_id" widget="many2many_tags" options="{'color_field': 'color'}"/>
+                                <field name="tax_id" widget="many2many_tags"/>
                                 <field name="price_subtotal" widget="monetary"/>
                             </tree>
                         </field>
@@ -146,7 +146,7 @@
                                         <field name="product_uom" groups="product.group_uom"/>
                                     </div>
                                     <field name="price_unit"/>
-                                    <field widget="many2many_tags" options="{'color_field': 'color'}" name="tax_id" domain="[('type_tax_use','=','sale')]"/>
+                                    <field widget="many2many_tags" name="tax_id" domain="[('type_tax_use','=','sale')]"/>
                                     <field name="price_subtotal" widget="monetary" invisible="1"/>
                                 </group>
                             </form>
@@ -156,7 +156,7 @@
                                 <field name="product_uom_qty" string="Quantity"/>
                                 <field name="product_uom" string="Unit of Measure" groups="product.group_uom"/>
                                 <field name="price_unit"/>
-                                <field name="tax_id" domain="[('type_tax_use', '=', 'sale')]" widget="many2many_tags" options="{'color_field': 'color'}"/>
+                                <field name="tax_id" domain="[('type_tax_use', '=', 'sale')]" widget="many2many_tags"/>
                                 <field name="price_subtotal" widget="monetary"/>
                             </tree>
                         </field>
diff --git a/addons/point_of_sale/views/pos_order_view.xml b/addons/point_of_sale/views/pos_order_view.xml
index 517c3b91a85..4c7698b5cac 100644
--- a/addons/point_of_sale/views/pos_order_view.xml
+++ b/addons/point_of_sale/views/pos_order_view.xml
@@ -37,8 +37,8 @@
                                 <field name="qty"/>
                                 <field name="price_unit" widget="monetary"/>
                                 <field name="discount" widget="monetary"/>
-                                <field name="tax_ids_after_fiscal_position" widget="many2many_tags" options="{'color_field': 'color'}"/>
-                                <field name="tax_ids" widget="many2many_tags" options="{'color_field': 'color'}" invisible="1"/>
+                                <field name="tax_ids_after_fiscal_position" widget="many2many_tags"/>
+                                <field name="tax_ids" widget="many2many_tags" invisible="1"/>
                                 <field name="price_subtotal" widget="monetary"/>
                                 <field name="price_subtotal_incl" widget="monetary"/>
                             </tree>
@@ -50,8 +50,8 @@
                                     <field name="price_unit" widget="monetary"/>
                                     <field name="price_subtotal" invisible="1" widget="monetary"/>
                                     <field name="price_subtotal_incl" invisible="1" widget="monetary"/>
-                                    <field name="tax_ids_after_fiscal_position" widget="many2many_tags" options="{'color_field': 'color'}"/>
-                                    <field name="tax_ids" widget="many2many_tags" options="{'color_field': 'color'}" invisible="1"/>
+                                    <field name="tax_ids_after_fiscal_position" widget="many2many_tags"/>
+                                    <field name="tax_ids" widget="many2many_tags" invisible="1"/>
                                     <field name="notice"/>
                                 </group>
                             </form>
diff --git a/addons/purchase/views/purchase_views.xml b/addons/purchase/views/purchase_views.xml
index 701a2fb3a61..1cb8c567135 100644
--- a/addons/purchase/views/purchase_views.xml
+++ b/addons/purchase/views/purchase_views.xml
@@ -224,7 +224,7 @@
                                     <field name="qty_invoiced" invisible="not context.get('show_purchase', False)"/>
                                     <field name="product_uom" groups="product.group_uom" attrs="{'readonly': [('state', 'in', ('purchase', 'done', 'cancel'))]}"/>
                                     <field name="price_unit"/>
-                                    <field name="taxes_id" widget="many2many_tags" options="{'color_field': 'color'}" domain="[('type_tax_use','=','purchase')]" context="{'default_type_tax_use': 'purchase'}"/>
+                                    <field name="taxes_id" widget="many2many_tags" domain="[('type_tax_use','=','purchase')]" context="{'default_type_tax_use': 'purchase'}"/>
                                     <field name="price_subtotal" widget="monetary"/>
                                 </tree>
                                 <form string="Purchase Order Line">
@@ -242,7 +242,7 @@
                                                 <field name="price_unit"/>
                                             </group>
                                             <group>
-                                                <field name="taxes_id" widget="many2many_tags" options="{'color_field': 'color'}" domain="[('type_tax_use', '=', 'purchase')]"/>
+                                                <field name="taxes_id" widget="many2many_tags" domain="[('type_tax_use', '=', 'purchase')]"/>
                                                 <field name="date_planned" widget="date"/>
                                                 <field name="account_analytic_id" colspan="2" groups="purchase.group_analytic_accounting"/>
                                                 <field name="company_id" groups="base.group_multi_company" options="{'no_create': True}"/>
@@ -609,7 +609,7 @@
                      <field name="property_account_expense_id" domain="[('deprecated','=',False)]" attrs="{'readonly': [('purchase_ok', '=', 0)]}" groups="account.group_account_user"/>
                 </field>
                 <field name='supplier_taxes_id' position="replace" >
-                     <field name="supplier_taxes_id" colspan="2" widget="many2many_tags" options="{'color_field': 'color'}" attrs="{'readonly':[('purchase_ok','=',0)]}"/>
+                     <field name="supplier_taxes_id" colspan="2" widget="many2many_tags" attrs="{'readonly':[('purchase_ok','=',0)]}"/>
                 </field>
             </field>
         </record>
diff --git a/addons/sale/views/sale_views.xml b/addons/sale/views/sale_views.xml
index 6cf32a9ba5b..d1b603fe750 100644
--- a/addons/sale/views/sale_views.xml
+++ b/addons/sale/views/sale_views.xml
@@ -237,7 +237,7 @@
                                             </div>
                                         </group>
                                         <group>
-                                            <field name="tax_id" widget="many2many_tags" options="{'color_field': 'color'}" domain="[('type_tax_use','=','sale'),('company_id','=',parent.company_id)]"
+                                            <field name="tax_id" widget="many2many_tags" domain="[('type_tax_use','=','sale'),('company_id','=',parent.company_id)]"
                                                 attrs="{'readonly': [('qty_invoiced', '&gt;', 0)]}"/>
                                             <label for="customer_lead"/>
                                             <div>
@@ -281,7 +281,7 @@
                                     <field name="analytic_tag_ids" groups="analytic.group_analytic_accounting" widget="many2many_tags" options="{'color_field': 'color'}"/>
                                     <field name="price_unit"
                                         attrs="{'readonly': [('qty_invoiced', '&gt;', 0)]}"/>
-                                    <field name="tax_id" widget="many2many_tags" options="{'color_field': 'color'}" domain="[('type_tax_use','=','sale'),('company_id','=',parent.company_id)]"
+                                    <field name="tax_id" widget="many2many_tags" domain="[('type_tax_use','=','sale'),('company_id','=',parent.company_id)]"
                                         attrs="{'readonly': [('qty_invoiced', '&gt;', 0)]}"/>
                                     <field name="discount" groups="sale.group_discount_per_so_line"/>
                                     <field name="price_subtotal" widget="monetary" groups="sale.group_show_price_subtotal"/>
diff --git a/addons/stock/views/product_views.xml b/addons/stock/views/product_views.xml
index af51d41212f..89524b980c8 100644
--- a/addons/stock/views/product_views.xml
+++ b/addons/stock/views/product_views.xml
@@ -128,7 +128,7 @@
                     <group name="inventory">
                         <group>
                             <field name="route_ids" widget="many2many_checkboxes" attrs="{'invisible':[('type', 'in', ['service', 'digital'])]}"/>
-                            <field name="route_from_categ_ids" widget="many2many_tags" options="{'color_field': 'color'}" readonly="1" attrs="{'invisible':[('route_from_categ_ids', '=', [])]}"/>
+                            <field name="route_from_categ_ids" widget="many2many_tags" readonly="1" attrs="{'invisible':[('route_from_categ_ids', '=', [])]}"/>
                         </group>
                         <group name="group_lots_and_weight">
                             <label for="weight" attrs="{'invisible':[('type', 'not in', ['product', 'consu'])]}"/>
diff --git a/addons/web/static/src/js/services/data_manager.js b/addons/web/static/src/js/services/data_manager.js
index c1e69a72ce3..999a9d8df01 100644
--- a/addons/web/static/src/js/services/data_manager.js
+++ b/addons/web/static/src/js/services/data_manager.js
@@ -349,7 +349,7 @@ return core.Class.extend({
             }
             if (attrs.Widget.prototype.fieldsToFetch) {
                 attrs.viewType = 'default';
-                attrs.relatedFields = attrs.Widget.prototype.fieldsToFetch;
+                attrs.relatedFields = _.extend({}, attrs.Widget.prototype.fieldsToFetch);
                 attrs.fieldsInfo = {
                     default: _.mapObject(attrs.Widget.prototype.fieldsToFetch, function () {
                         return {};
diff --git a/addons/web/static/tests/fields/relational_fields_tests.js b/addons/web/static/tests/fields/relational_fields_tests.js
index 1a7badd353f..30b6acc2c40 100644
--- a/addons/web/static/tests/fields/relational_fields_tests.js
+++ b/addons/web/static/tests/fields/relational_fields_tests.js
@@ -6156,32 +6156,44 @@ QUnit.module('relational_fields', {
 
     QUnit.module('FieldMany2ManyTags');
 
-    QUnit.test('fieldmany2many tags without color', function (assert) {
-        assert.expect(4);
+    QUnit.test('fieldmany2many tags with and without color', function (assert) {
+        assert.expect(5);
 
+        this.data.partner.fields.partner_ids = {string: "Partner", type: "many2many", relation: 'partner'};
         var form = createView({
             View: FormView,
             model: 'partner',
             data: this.data,
             arch:'<form string="Partners">' +
+                    '<field name="partner_ids" widget="many2many_tags" options="{\'color_field\': \'color\'}"/>' +
                     '<field name="timmy" widget="many2many_tags"/>' +
                 '</form>',
             mockRPC: function (route, args) {
                 if (args.method ==='read' && args.model === 'partner_type') {
                     assert.deepEqual(args.args , [[12], ['display_name']], "should not read any color field");
+                } else if (args.method ==='read' && args.model === 'partner') {
+                    assert.deepEqual(args.args , [[1], ['display_name', 'color']], "should read color field");
                 }
                 return this._super.apply(this, arguments);
             }
         });
-        var $input = form.$('.o_field_many2manytags input');
+
+        // add a tag on field partner_ids
+        var $input = form.$('.o_field_many2manytags[name="partner_ids"] input');
+        $input.click(); // opens the dropdown
+        $input.autocomplete('widget').find('li:first()').click(); // adds a tag
+
+        // add a tag on field timmy
+        $input = form.$('.o_field_many2manytags[name="timmy"] input');
         $input.click(); // opens the dropdown
         assert.strictEqual($input.autocomplete('widget').find('li').length, 3,
             "autocomplete dropdown should have 3 entries (2 values + 'Search and Edit...')");
         $input.autocomplete('widget').find('li:first()').click(); // adds a tag
-        assert.strictEqual(form.$('.o_field_many2manytags > span').length, 1,
+        assert.strictEqual(form.$('.o_field_many2manytags[name="timmy"] > span').length, 1,
             "should contain 1 tag");
-        assert.ok(form.$('.o_field_many2manytags > span:contains("gold")').length,
+        assert.ok(form.$('.o_field_many2manytags[name="timmy"] > span:contains("gold")').length,
             "should contain newly added tag 'gold'");
+
         form.destroy();
     });
 
diff --git a/addons/website_customer/views/res_partner_views.xml b/addons/website_customer/views/res_partner_views.xml
index a756453c4f6..69c59989879 100644
--- a/addons/website_customer/views/res_partner_views.xml
+++ b/addons/website_customer/views/res_partner_views.xml
@@ -7,7 +7,7 @@
             <field name="arch" type="xml">
                 <data>
                     <xpath expr="//field[@name='company_id']" position="after">
-                        <field name="website_tag_ids" widget="many2many_tags" options="{'color_field': 'color'}" string="Website Tags"/>
+                        <field name="website_tag_ids" widget="many2many_tags" string="Website Tags"/>
                     </xpath>
                 </data>
             </field>