I don't know why but my game looks like this when I try to play it in browser:
Initially I just thought it was a really cool aesthetic until I couldn't figure out what to do and decided to check the screenshots lol!
The exe worked though!
I really liked the puzzles, an interesting combination of platforming and quick thinking puzzle resolution.
If I were to give any constructive feedback, I'd say the stopping is a little bit too slippery and the acceleration of the character a bit too fast. The two of those in combination made putting the block on the button really difficult.
Also some sort of visual indicator of which color is back and forward would be helpful.