Give aggregation target green color

resources/frontend_client/app/css/query_builder.css

@@ -368,11 +368,13 @@
 /* VIEW SECTION */
 
 .View-section-aggregation,
+.View-section-aggregation-target,
 .View-section-breakout {
     color: var(--green-color);
 }
 
 .View-section-aggregation.selected .QueryOption,
+.View-section-aggregation-target.selected .QueryOption,
 .View-section-breakout.selected .QueryOption {
     color: var(--green-color);
 }

resources/frontend_client/app/query_builder/aggregation_widget.react.js

@@ -89,6 +89,7 @@ export default React.createClass({
                 <div className="flex align-center">
                     <span className="text-bold">of</span>
                     <SelectionModule
+                        className="View-section-aggregation-target"
                         placeholder="What attribute?"
                         items={this.state.aggregationFields}
                         display="1"