import fl.motion.AdjustColor;

import flash.filters.ColorMatrixFilter;

test_mc.addEventListener(MouseEvent.MOUSE_OVER, whenMOver);

test_mc.addEventListener(MouseEvent.MOUSE_OUT, whenMOut);

var adjustColor:AdjustColor = new AdjustColor();

adjustColor.saturation = -100; 

var colorMatrix:ColorMatrixFilter = new ColorMatrixFilter(adjustColor.CalculateFinalFlatArray());

function whenMOver(e:MouseEvent){

        test_mc.filters = [colorMatrix];

}

function whenMOut(e:MouseEvent){

        test_mc.filters = [];

}