Added color blocks to grid view

app/components/bikes/javascripts/init_component.js

@@ -9,5 +9,8 @@
       // The beauty of using Ext.Direct: calling 3 endpoints in a row, which results in a single call to the server!
       this.selectBikeBrand({bike_brand_id: record.get('bike_brand__brand')});
     }, this);
+  },
+  colorBlock: function(value){
+    return Ext.String.format('<div style="display:inline-block">{1}</div><div style="background-color:#{0};width:50px;height:10px;display:inline-block;margin:0 5px 0 5px;border:solid;border-color:gray;border-width:1px;"></div>', value, value);
   }
 }