I once did that:
But I did it with a complete different workflow. The 4 colored areas were PNG sequences of a full animated build up from 0% to 100% over 200 frames put inside movieClips. The code then played them to the position they need to be. Because I have 200 frames of each, the resolution was down to half a percent and that was more than enough. The Greensock library has a function to animate the playhead of a movieClip and that was in this case very usefull.