The visual design is very pleasant and enjoyable to look at, and I especially liked the motion effects during flight, which greatly enhance immersion. In terms of gameplay, it would be even more better if there were more pros and cons to using different color modes, along with additional goals or objectives.
I suggest to zoom out the camera and move the character off-center a bit more, so the players can see more of their surroundings and better navigate while flying. You might also consider implementing a Level of Detail (LOD) system to hide the character model when the camera gets too close, as it frequently does during vertical flight (though some players might jokingly mistake it for a censorship effect www)