One thing that I can see that would add a extra layer of fun to this would be to include controllers in each frame for controlling the LED color. A simple microcontroller and a darlington driver you could make each frame change color on its own at set or random intervals. The circuitry is relatively simple and will work with what you already have installed with maybe an extra $5 per frame.
Otherwise LOVE this idea. I have always found kinetic sculptures to be fascinating. Great job on this. Look forward to seeing the vid!