interesting way to kill time instead of sleeping

Up to 22 at least there have been 2 levels that have to do with color, the others are just "grab the sign so you keep going", also level 22 is just.... stupid, it has nothing to do with color, it's "fall through this avoiding spikes.... twice"

Edit: finished it, and yeah, not many levels need color puzzling, you can get most with try and repeat anyway.