Hey!
I have some feedback for your game.
Firstly, all platformers *really* need coyote jump. ( Coyote jump means that you can jump off a ledge a couple of frames after not being grounded anymore )
Secondly, when you dash, you dash waaay too much.
Thirdly, wall-jumping feels really bad.
Furthermore, making so that you don't die a couple of frames after the colors switch would have been a good idea, as most of my deaths felt unfair.
Additionally, binding the "Try again" button to a key that is not Space, Shift, A or D would have been a good idea, as sometimes I'd just die and almost instantly restart because I pressed space even though I did not want to.
Lastly, adding a high score would have been a good idea. It's really easy to do so using PlayerPrefs.
One of my highest scores:
