Math.random(), TweenMax.DropShadowFilter

import gs.TweenMax;
import gs.easing.*;

var _spr:Sprite = new Sprite();
_spr.graphics.beginFill(0x0000ff, 1);
_spr.graphics.drawRect((stage.stageWidth - 100) / 2, (stage.stageHeight - 100) / 2, 100, 100);
TweenMax.to(_spr, .5, {dropShadowFilter:{color:0x000000, alpha:0.5, blurX:2, blurY:2, distance:5}});

this.addChild(_spr);

var _btn:Sprite = new Sprite();
_btn.graphics.beginFill(0x000000, 1)
_btn.graphics.drawRect(stage.stageWidth - 30, stage.stageHeight - 30, 30, 30);
this.addChild(_btn);

_btn.buttonMode = true;
_btn.addEventListener(MouseEvent.CLICK, btnclick);

function btnclick (e:MouseEvent):void{
 TweenMax.to(_spr, 1, {tint:Math.random() * 0xffffff, ease:Expo.easeOut});
}






 - Math.random() * 0xffffff : Color 랜덤 추출.
 - TweenMax.dropShadowFilter - 그림자.


참고 사이트 : http://blog.greensock.com/tweenmax/