// forked from beinteractive's Misc. ColorTransform tween with BetweenAS3
package {

import flash.display.Sprite;
import flash.text.TextField;
import flash.events.MouseEvent;
import org.libspark.betweenas3.BetweenAS3;
import org.libspark.betweenas3.tweens.ITween;
import org.libspark.betweenas3.easing.*;

public class Sample extends Sprite
{
    public function Sample()
    {
        (addChild(new TextField()) as TextField).text = 'Click to start';
        stage.addEventListener(MouseEvent.MOUSE_UP, mouseUpHandler);
    }
    
    private function mouseUpHandler(e:MouseEvent):void
    {
        while (numChildren > 0) {
            removeChildAt(0);
        }
        
        var box:Box = addNewBox(230);
        box.x = 230;
        
        // ColorTransform Tween
        var t:ITween = BetweenAS3.tween(box,
            {
                transform:{
                    colorTransform:{
                        redOffset:255,
                        greenOffset:255,
                        blueOffset:128
                    }
                },
                _blurFilter:{
                    blurX:16,
                    blurY:16
                }
            },
            {
                transform:{
                    colorTransform:{
                        redOffset:128,
                        greenOffset:128,
                        blueOffset:128
                    }
                },
                _blurFilter:{
                    blurX:0,
                    blurY:0
                }
            }, 1.0, Cubic.easeOut
        );
        
        var s:ITween = BetweenAS3.serial(t, BetweenAS3.reverse(t));
        s.stopOnComplete = false;
        s.play();
    }
    
    private function addNewBox(y:Number):Box
    {
        var box:Box = new Box();
        box.x = 20;
        box.y = y;
        addChild(box);
        return box;
    }
}

}

import flash.display.Sprite;

internal class Box extends Sprite
{
    public function Box():void
    {
        graphics.beginFill(0);
        graphics.drawRect(-20, -20, 40, 40);
        graphics.endFill();
    }
}

Study - BetweenAS3