Art and audio are super nice, also i love games which have a settings menu for audio and stuff.
Maybe you could have introduced the need for switching dimensions a little earlier or the mechanic as a whole a little later, since it felt kinda uneccessary in the first few levels, as it didnt make any sense to not used the orange dimension. Please dont take this too harsh as it is really nitpicky and i just wanted to give you something to improve upon.
Congratz on submitting a well made platformer for the jam!