Y'know, You actually have something pretty okay here.
Music is pretty jamming, Visually its... well, it's a cube with a grid background. Least it's in color. It's really not bad at all, it plays super smoothly, the basic platformer mechanics are there, and you actually do something nice with placing the jump-through panels in the middle of the level in a safe spot, allowing the player to learn for themselves that blue panels are safe to go through. Much better then writing a text box out pointing this out, in my opinion.
Honestly it feels pretty nice to play just... You stopped. Why? It's just incomplete, looks like you dropped it in the middle of creating this game, then decided to upload it anyways.
You got some nice foundations here, if you consider coming back and finishing this, i'd honestly be happy to play it. Oh well, Good job on what you have!
P.S: You might wanna put the controls at a static text box at the start, rather then just having them up in the corner constantly, just looks nicer.