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];
骨骼动画本身就相当于是一个Sprite,你可以使用颜色滤镜将骨骼动画做置灰处理!