var ac:AdjustColor = new AdjustColor();

ac.hue = 50;

ac.saturation = -50;

var filter:ColorMatrixFilter = new ColorMatrixFilter(ac.CalculateFinalFlatArray());

someMovieClip.filters = [filter];

import fl.motion.AdjustColor;

var ac:AdjustColor=new AdjustColor();

var saturation:int=0;

addEventListener(Event.ENTER_FRAME, enterFrameHandler);

 

function enterFrameHandler(e:Event):void{

        saturation-=5;

        ac.brightness=0;

        ac.hue=0;

        ac.contrast=0;

        ac.saturation=saturation;

 

        filters=[new ColorMatrixFilter(ac.CalculateFinalFlatArray())];

 

}