Flex开发中，有时会需要通过代码调整设置组件的颜色，下面演示了两种做法。

<?xml version="1.0" encoding="utf-8"?>
<s:Application xmlns:fx="http://ns.adobe.com/mxml/2009"
			   xmlns:s="library://ns.adobe.com/flex/spark"
			   xmlns:mx="library://ns.adobe.com/flex/mx"
			   creationComplete="init()"
			   fontFamily="微软雅黑">
	<fx:Script>
		<![CDATA[
			private function init():void{
				setRGB(cav2,0xff00ff);
			}
			
			public static function setRGB(obj:DisplayObject, color:uint):void{
				var c:ColorTransform = new ColorTransform();
				c.color = color;
				obj.transform.colorTransform = c;
			}
		]]>
	</fx:Script>
	<s:layout>
		<s:HorizontalLayout paddingLeft="50" paddingTop="50"/>
	</s:layout>
	
	<s:Group id="cav1" width="100" height="100">
		<s:Rect width="100%" height="100%">
			<s:fill>
				<s:SolidColor color="0x00cc00" alpha="0.4"/>
			</s:fill>
			<s:stroke>
				<s:SolidColorStroke color="0x00cc00" weight="6"/>
			</s:stroke>
		</s:Rect>
		<s:Label text="正常" x="35" y="40"/>
	</s:Group>
	
	<s:Group id="cav2" width="100" height="100">
		<s:Rect width="100%" height="100%">
			<s:fill>
				<s:SolidColor color="0x00cc00" alpha="0.4"/>
			</s:fill>
			<s:stroke>
				<s:SolidColorStroke color="0x008800" weight="6"/>
			</s:stroke>
		</s:Rect>
		<s:Label text="变色" x="35" y="40"/>
	</s:Group>
</s:Application>

方法2：不会丢失细节，更好（这种做法的话，原始元件需要用黑白灰来制作，以达到最好的效果）

public function transformColor(obj:Object,color:Number):void {
	if (obj==null) return;
	
	var c:ColorTransform=new ColorTransform();
	c.color=color; 
	
	var ct:ColorTransform;
	//ct=new ColorTransform(1,1,1,1,c.redOffset-127,c.greenOffset-127,c.blueOffset-127,0);
	ct=new ColorTransform(1,1,1,1,c.redOffset,c.greenOffset,c.blueOffset,0);
	obj.transform.colorTransform=ct;
}