Counter is black so 4 colors total that i noticed. Liked the graphics and the look of it. Controls were very floaty and jump being up was kinda janky.
Movement felt a bit slow. Also got stuck at the music puzzle (Not a fault of the puzzle, was just a bit bored so quit). Still was a decent playthrough.
I liked the colors (I think the black box at the beginning probably puts you at 4 though). Short and simple. No audio though, which would have improved it quite a bit.