The following example shows how you can set the icon color of a disabled Flex CheckBox control by setting the disabledIconColor style.
Full code after the jump.
<?xml version="1.0" encoding="utf-8"?>
<!-- http://blog.flexexamples.com/2009/01/29/setting-the-arrow-icon-color-of-a-disabled-checkbox-control-in-flex/ -->
<mx:Application name="ComboBox_disabledIconColor_test"
xmlns:mx="http://www.adobe.com/2006/mxml"
layout="vertical"
verticalAlign="top"
backgroundColor="white">
<mx:ApplicationControlBar dock="true">
<mx:Form styleName="plain">
<mx:FormItem label="disabledIconColor:">
<mx:ColorPicker id="colorPicker" />
</mx:FormItem>
<mx:FormItem label="enabled:">
<mx:CheckBox id="checkBox" />
</mx:FormItem>
</mx:Form>
</mx:ApplicationControlBar>
<mx:ComboBox id="comboBox"
dataProvider="[One,Two,Three,Four,Five,Six,Seven,Eight]"
iconColor="red"
disabledIconColor="{colorPicker.selectedColor}"
enabled="{checkBox.selected}" />
</mx:Application>
