[]骨骼动画如何设置成灰色

	var grayscaleMat:Array = [0.3086, 0.6094, 0.0820, 0, 0, 0.3086, 0.6094, 0.0820, 0, 0, 0.3086, 0.6094, 0.0820, 0, 0, 0, 0, 0, 1, 0];

					var grayscaleFilter:ColorFilter = new ColorFilter(grayscaleMat);

					mArmature.filters=[grayscaleFilter];