This is a neat looking little game. I liked the music and sound effects a lot. Game world looks nice enough, though the UI could be improved visually. Personally I thought the jumping mechanic was a bit too high. Also on the higher difficulty levels it gets quite tough to see which color should be avoided as you have to check constantly in the top right corner. Did you experiment with how it would look if you made the lower part of the background black instead of white? I would try making the entire background black and put slightly larger stars in place with the color that should be avoided.
The exploding tiles were a nice touch. Good job!