I don't know how the pills work but it would be pretty easy to make it light up or do different things at different RPMS.

For example have it light up at a certain RPM then blink 500RPM higher. Or have the perimeter be one color of LEDs and a cluster of different color and brigher LEDs in the center or vice versa.

Don't even need to have seperate sections, multi-color LEDs aren't very expensive. I use them all the time at work.