for anyone still looking for the color black, in the room above the orange pool (the one with all the cross shaped platform, run on the floor all the way to the bottom left.
under the left-most cross shape you can psh a block (from the right, it will fall on the hole in the left). there's a hidden door that leads to black

Great game, unlike others I enjoyed the challenge of navigating a large map. Any hint on the medal for getting black, the eighth colour?

very clever puzzle the only thing that got me was that i had to go back and recheck for the final color puzzle but i found black and hat really early so the game wasnt really frustrating besides looking for the switches and the final puzzle haha oh yea and it took my 2nd playthrough to find out sprint is x

the game is great and well thought out,but it needs a save feature.

what's with the whole Peanut Butter thing on the main menu...?