逐渐改变位图的颜色？

I've got several bitmaps on the screen that gradually need to change colours depending on values they are set. I've looked into LightingColorFilter, PorterDuffColorFilter and ColorMatrix but the problem is the colours change constantly (tens of times a second and many objects). The problem with the 2 above is they create memory leaks and performance problems.I've got several bitmaps on the screen that gra