diff --git a/addons/hr/models/hr_employee_category.py b/addons/hr/models/hr_employee_category.py
index dbd14f81a94..41f8bedfbe4 100644
--- a/addons/hr/models/hr_employee_category.py
+++ b/addons/hr/models/hr_employee_category.py
@@ -1,6 +1,8 @@
 # -*- coding: utf-8 -*-
 # Part of Odoo. See LICENSE file for full copyright and licensing details.
 
+from random import randint
+
 from odoo import fields, models
 
 
@@ -9,8 +11,11 @@ class EmployeeCategory(models.Model):
     _name = "hr.employee.category"
     _description = "Employee Category"
 
+    def _get_default_color(self):
+        return randint(1, 11)
+
     name = fields.Char(string="Tag Name", required=True)
-    color = fields.Integer(string='Color Index')
+    color = fields.Integer(string='Color Index', default=_get_default_color)
     employee_ids = fields.Many2many('hr.employee', 'employee_category_rel', 'category_id', 'emp_id', string='Employees')
 
     _sql_constraints = [
diff --git a/addons/hr_recruitment/models/hr_recruitment.py b/addons/hr_recruitment/models/hr_recruitment.py
index e18d4564948..a17e1a5e957 100644
--- a/addons/hr_recruitment/models/hr_recruitment.py
+++ b/addons/hr_recruitment/models/hr_recruitment.py
@@ -1,6 +1,8 @@
 # -*- coding: utf-8 -*-
 # Part of Odoo. See LICENSE file for full copyright and licensing details.
 
+from random import randint
+
 from odoo import api, fields, models, tools, SUPERUSER_ID
 from odoo.tools.translate import _
 from odoo.exceptions import UserError
@@ -518,8 +520,11 @@ class ApplicantCategory(models.Model):
     _name = "hr.applicant.category"
     _description = "Category of applicant"
 
+    def _get_default_color(self):
+        return randint(1, 11)
+
     name = fields.Char("Tag Name", required=True)
-    color = fields.Integer(string='Color Index', default=10)
+    color = fields.Integer(string='Color Index', default=_get_default_color)
 
     _sql_constraints = [
             ('name_uniq', 'unique (name)', "Tag name already exists !"),
diff --git a/addons/project/models/project.py b/addons/project/models/project.py
index 2e73c760ab4..4da8ee5c2d0 100644
--- a/addons/project/models/project.py
+++ b/addons/project/models/project.py
@@ -3,6 +3,7 @@
 
 import ast
 from datetime import timedelta
+from random import randint
 
 from odoo import api, fields, models, tools, SUPERUSER_ID, _
 from odoo.exceptions import UserError, AccessError, ValidationError, RedirectWarning
@@ -1074,8 +1075,11 @@ class ProjectTags(models.Model):
     _name = "project.tags"
     _description = "Project Tags"
 
+    def _get_default_color(self):
+        return randint(1, 11)
+
     name = fields.Char('Tag Name', required=True)
-    color = fields.Integer(string='Color Index')
+    color = fields.Integer(string='Color Index', default=_get_default_color)
 
     _sql_constraints = [
         ('name_uniq', 'unique (name)', "Tag name already exists!"),
diff --git a/addons/repair/models/repair.py b/addons/repair/models/repair.py
index f26ef87900a..ed642164b07 100644
--- a/addons/repair/models/repair.py
+++ b/addons/repair/models/repair.py
@@ -1,6 +1,7 @@
 # Part of Odoo. See LICENSE file for full copyright and licensing details.
 
 from collections import defaultdict
+from random import randint
 
 from odoo import api, fields, models, _
 from odoo.exceptions import UserError, ValidationError
@@ -794,8 +795,11 @@ class RepairTags(models.Model):
     _name = "repair.tags"
     _description = "Repair Tags"
 
+    def _get_default_color(self):
+        return randint(1, 11)
+
     name = fields.Char('Tag Name', required=True)
-    color = fields.Integer(string='Color Index')
+    color = fields.Integer(string='Color Index', default=_get_default_color)
 
     _sql_constraints = [
         ('name_uniq', 'unique (name)', "Tag name already exists!"),
diff --git a/addons/sales_team/models/crm_tag.py b/addons/sales_team/models/crm_tag.py
index a0db292a292..205a7ada165 100644
--- a/addons/sales_team/models/crm_tag.py
+++ b/addons/sales_team/models/crm_tag.py
@@ -1,16 +1,20 @@
 # -*- coding: utf-8 -*-
 # Part of Odoo. See LICENSE file for full copyright and licensing details.
 
+from random import randint
+
 from odoo import fields, models
 
 
 class Tag(models.Model):
-
     _name = "crm.tag"
     _description = "CRM Tag"
 
+    def _get_default_color(self):
+        return randint(1, 11)
+
     name = fields.Char('Tag Name', required=True, translate=True)
-    color = fields.Integer('Color Index')
+    color = fields.Integer('Color Index', default=_get_default_color)
 
     _sql_constraints = [
         ('name_uniq', 'unique (name)', "Tag name already exists !"),
diff --git a/addons/website_event_track/models/event_track.py b/addons/website_event_track/models/event_track.py
index 205b8e4e969..31054d09855 100644
--- a/addons/website_event_track/models/event_track.py
+++ b/addons/website_event_track/models/event_track.py
@@ -1,6 +1,8 @@
 # -*- coding: utf-8 -*-
 # Part of Odoo. See LICENSE file for full copyright and licensing details.
 
+from random import randint
+
 from odoo import api, fields, models
 from odoo.tools.translate import _, html_translate
 from odoo.addons.http_routing.models.ir_http import slug
@@ -12,9 +14,14 @@ class TrackTag(models.Model):
     _description = 'Event Track Tag'
     _order = 'name'
 
+    def _get_default_color(self):
+        return randint(1, 11)
+
     name = fields.Char('Tag Name', required=True)
     track_ids = fields.Many2many('event.track', string='Tracks')
-    color = fields.Integer(string='Color Index', help="Note that colorless tags won't be available on the website.")
+    color = fields.Integer(
+        string='Color Index', default=_get_default_color,
+        help="Note that colorless tags won't be available on the website.")
 
     _sql_constraints = [
         ('name_uniq', 'unique (name)', "Tag name already exists !"),
diff --git a/odoo/addons/base/models/res_partner.py b/odoo/addons/base/models/res_partner.py
index 14e8c634339..63048f138ff 100644
--- a/odoo/addons/base/models/res_partner.py
+++ b/odoo/addons/base/models/res_partner.py
@@ -11,6 +11,7 @@ import re
 
 import requests
 from lxml import etree
+from random import randint
 from werkzeug import urls
 
 from odoo import api, fields, models, tools, _
@@ -72,8 +73,11 @@ class PartnerCategory(models.Model):
     _order = 'name'
     _parent_store = True
 
+    def _get_default_color(self):
+        return randint(1, 11)
+
     name = fields.Char(string='Tag Name', required=True, translate=True)
-    color = fields.Integer(string='Color Index')
+    color = fields.Integer(string='Color Index', default=_get_default_color)
     parent_id = fields.Many2one('res.partner.category', string='Parent Category', index=True, ondelete='cascade')
     child_ids = fields.One2many('res.partner.category', 'parent_id', string='Child Tags')
     active = fields.Boolean(default=True, help="The active field allows you to hide the category without removing it.")