refactor(toolbar): color the icon in the advanced filtering button

Author: simeonoff

projects/igniteui-angular/src/lib/core/styles/components/grid-toolbar/_grid-toolbar-component.scss

@@ -23,6 +23,10 @@
         @extend %igx-grid-toolbar__actions !optional;
     }
 
+    @include e(adv-filter, $m: 'filtered') {
+        @extend %igx-grid-toolbar__adv-filter--filtered !optional;
+    }
+
     @include e(dropdown){
         @extend %igx-grid-toolbar__dropdown !optional;
     }

projects/igniteui-angular/src/lib/core/styles/components/grid-toolbar/_grid-toolbar-theme.scss

@@ -303,6 +303,10 @@
         }
     }
 
+    %igx-grid-toolbar__adv-filter--filtered {
+        color: igx-color(map-get($theme, 'palette'), 'secondary') !important;
+    }
+
     %igx-grid-toolbar__dropdown {
         position: relative;