Very interesting! The mouse sensitivity is too high, I don't know how to turn it down. I think the color changing is cool for a platformer, though it needs a bit more polish, and I think the color change is too slow. I don't know how much this is like it being in the 4th dimension? It's only changing colors? Or did I miss something? The visuals are very basic, maybe next time try some textures/models? Cool concept, I think you should try to dig more into abstract space, like destroying the camera view and just making everything wonky and weird. Maybe like superliminal or other games like that, and you can include color change as a representation of shifting spots in the 4th dimension. Right now it's just color changes, but if you have extra graphics and weird things going on that show you shifting, the color change shows the spot inside the 4th dimension that you're in - which is what that color change is supposed to represent. Right now it just changes color but everything else should change. Everything else should change and you, the player, should stay the same except your "4th dimension spot representation" (your color changes). Cool thought though! It just needs work.
If you could review my game I would really appreciate that!