[FIX] web: table rows' contextual color

Increase readability for contextual (success, warning..) table rows.

addons/web/static/src/scss/bootstrap_overridden.scss

@@ -78,8 +78,8 @@ $headings-font-weight: bold;
 //
 // Customizes the `.table` component with basic values, each used across all table variations.
 
-$table-accent-bg: #EFEFF8; // FIXME: expose
-$table-hover-bg: darken($table-accent-bg, 5%);
+$table-accent-bg: rgba($black, .01);
+$table-hover-bg: rgba($black, .04);
 
 // Dropdowns
 //

addons/web/static/src/scss/list_view.scss

@@ -85,6 +85,11 @@
         display: table-cell;
     }
 
+    // Contextual classes
+    @each $color, $value in $theme-colors {
+        $safe: saturate(theme-color-level($color, 2), 10%);
+        @include text-emphasis-variant(".text-#{$color}", $safe);
+    }
 
     // Grouped list views
     tbody > tr.o_group_header {