@Kane , it looks like i collected all the paints in Popgoes arcade, since i don't see any paints left on the game map and it feels like all the paints i have is full collection of them, but i still can't unlock achievement for unlocking all the paints in the game. I need this achievement for 200% of game's completion, here's the list of all paints i collected, so you maybe could give me advice what i've missed:

Yellow

Blue

Pink

Red

Orange

Grey

Indigo

Purple

Green