设置NumericStepper控件文本区的边框颜色。

NumericStepper控件的borderColor样式学习.
示例：

代码：

<? xml version="1.0" encoding="utf-8" ?>
<!--  http://blog.flexexamples.com/2008/05/26/setting-the-border-color-on-a-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 ="borderColor:" >
                 < mx:ColorPicker  id ="colorPicker"   />
             </ mx:FormItem >
         </ mx:Form >
     </ mx:ApplicationControlBar >

     < mx:NumericStepper  id ="numericStepper"
            borderColor =" {colorPicker.selectedColor} "   />

</ mx:Application >