<?xml version="1.0" encoding="utf-8"?>
<!-- http://blog.flexexamples.com/2008/05/25/setting-the-icon-color-on-a-disabled-numericstepper-control-in-flex/ -->
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml"
        layout="vertical"
        verticalAlign="middle"
        backgroundColor="white">

<mx:Style>
        NumericStepper {
            disabledIconColor: red;
        }
    </mx:Style>

<mx:ApplicationControlBar dock="true">
        <mx:Form styleName="plain">
            <mx:FormItem label="enabled:">
                <mx:CheckBox id="checkBox" selected="true" />
            </mx:FormItem>
        </mx:Form>
    </mx:ApplicationControlBar>

<mx:NumericStepper id="numericStepper"
            enabled="{checkBox.selected}" />

</mx:Application>

<?xml version="1.0" encoding="utf-8"?>
<!-- http://blog.flexexamples.com/2008/05/25/setting-the-icon-color-on-a-disabled-numericstepper-control-in-flex/ -->
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml"
        layout="vertical"
        verticalAlign="middle"
        backgroundColor="white">

<mx:ApplicationControlBar dock="true">
        <mx:Form styleName="plain">
            <mx:FormItem label="enabled:">
                <mx:CheckBox id="checkBox" selected="true" />
            </mx:FormItem>
            <mx:FormItem label="disabledIconColor:">
                <mx:ColorPicker id="colorPicker" />
            </mx:FormItem>
        </mx:Form>
    </mx:ApplicationControlBar>

<mx:NumericStepper id="numericStepper"
            enabled="{checkBox.selected}"
            disabledIconColor="{colorPicker.selectedColor}" />

</mx:Application>

<?xml version="1.0" encoding="utf-8"?>
<!-- http://blog.flexexamples.com/2008/05/25/setting-the-icon-color-on-a-disabled-numericstepper-control-in-flex/ -->
<mx:Application xmlns:mx="http://www.adobe.com/2006/mxml"
        layout="vertical"
        verticalAlign="middle"
        backgroundColor="white">

<mx:Script>
        <![CDATA[
            import mx.events.ColorPickerEvent;

private function colorPicker_change(evt:ColorPickerEvent):void {
                numericStepper.setStyle("disabledIconColor", evt.color);
            }
        ]]>
    </mx:Script>

<mx:ApplicationControlBar dock="true">
        <mx:Form styleName="plain">
            <mx:FormItem label="enabled:">
                <mx:CheckBox id="checkBox" selected="true" />
            </mx:FormItem>
            <mx:FormItem label="disabledIconColor:">
                <mx:ColorPicker id="colorPicker"
                        change="colorPicker_change(event);" />
            </mx:FormItem>
        </mx:Form>
    </mx:ApplicationControlBar>

<mx:NumericStepper id="numericStepper"
            enabled="{checkBox.selected}" />

</mx:Application>