The game works just fine on my Windows system. I don't know why other people are experiencing issues.
There are some frustrating parts like in the second level where you keep hitting your head against the red outer boundaries ... (You might want to make it more forgiving, especially in the early levels).
I like the idea of the different colors having different physical properties. Although we have seen games of this type before, that's something I think is a new twist on the genre. Very creative!
Just an idea: You could replace the main character with Picasso's Harlequin or something similar ...