Set textSelectionColor of itemrenderer in my combobox

Question

Hi all,
First of all, all apologies if this question were already discussed around. I serached and found nothing. On the web, all that I have found didn't really help.
I defined an itemRenderer for a combobox
<mx:VBox xmlns:mx="http://www.adobe.com/2006/mxml" styleName="plain" >
     <mx:Style source="styles.css" />
     <mx:Script>
          <![CDATA[
               private function check():void{
                    if(data.status=='ko'){
                         lbl.styleName='ko';
          ]]>
     </mx:Script>
     <mx:Label id="lbl"
                 text="{data.name}"
                 valueCommit="check()"
     />
</mx:VBox>
And then my combobox
<mx:ComboBox itemRenderer="listItem" labelField="name" />
I have styles the combobox component like this
ComboBox
     font-family:"HelveticaNeueLT Pro 57 Cn";
     font-size:12;
     color:#FFFFFF;
     alternatingItemColors: #555555, #383838;
     rollOverColor:#F9B41F;
     selectionColor:#2D2D2D;
     textRollOverColor:white;
     textSelectedColor:#F9B41F;
Everything is fine to the exception of the textRollOverColor & textSelectedColor properties which are ignored by the itemRenderer.
So I am looking for a way to do this.
I was advised to create a custom combobox, so I did
package custom
     import mx.controls.ComboBox;
     import mx.events.DropdownEvent;
     public class customCombobox extends ComboBox
          private var DD:ComboBox;
          public function customCombobox()
               //TODO: implement function
               super();
But I can't get how to deal with the events (rollOver/selected) so I can style the label of the itemRenderer. I am so stuck for days on that.
So thanks in advance to anyone who could help exiting this deadend
Just for info, it needs to be mx only, not spark.
Loic

Answer 1

The renderer is responsible for setting the text color using those styles.
Look in mx.controls.listClasses.ListItemRenderer to see how it does it.