Cool take on the theme. Mechanics and level design felt well thought out in general.
Very striking aesthetic. Lighting effect for each level of speed looks really good when combined with the Greys of the rest of the level. I liked your choice of character model, very intriguing appearance. Music Bops too.
For improvements, I found the orbs that let you jump more clunky to use. Maybe allow the player to hold spacebar to move upwards, instead of having to mash the Spacebar. That was the main reason that I stopped playing (I got stuck on level 3 I think).
Strong submission. Congratulations!