Hey,
so first things first, menu buttons are not responding correctly on lower resolutions for me - click-sensitive area is panned left from the button image.
I'll look into this.
As for the game itself, mechanics is interesting, although not self-explanatory. I would add some sort of introduction, or maybe small tooltips to explain what's going on with changing colors and objects behavior. It will make the game much more user-friendly.
I will try explain things more.
Also, while I understand you want to focus on a pure gameplay, visually game seems a bit bleak. Maybe consider adding more diverse background, or some stronger fx?
Art is going to be my next big focus.
Other than that it's an interesting effort, some of the challenges are pretty sophisticated! Keep it up!
Thanks for all of the feedback. It helps alot