After fooling around with colorscales a while, I got the idea of making a space game where the R-G-B colors serve as fuel to the ship, and the player collects more color by siphoning it from asteroids. Sadly, this idea didn't get to come entirely to fruition, but this is what I've got.

Mostly done as javascript practice, so the 'game' is fairly unfinished. The level can be beat just by zooming straight ahead!

(You can press W to cheat and reset all fuel tanks. ;))