Awesome! Great work! Love the aesthetic and pretty much everything about it.
A couple of little suggestions, though...
- The music sometimes gets out of sync with the changing colours of the gates and bridges; could probably do with a little tweaking, as the player comes to rely on the audio as much as the visual prompts for their timing.
- Going back to the main menu at the completion of each stage is a little jarring. Might be better to just go on to the next stage as you clear each one?
Otherwise, seriously great work, on all counts!!