My game uses a similar idea, and even has clouds on the background, too :D
Fun game. Nice level design, although sometimes you get lost and start brute-forcing the solution by randomly running around. Interesting cube coloring mechanics, forces you to move a bit more carefully. The cube’s center seems to always stay at the same height which make the cube’s edge go through the ground when it rotates, - not a huge problem, of course, just a small visual quirk. The UI style feels like it doesn’t match the game’s visuals, although that might be just me :)
Anyways, nice game, good job! Consider trying my game if you want.