Yea, this game has a few annoying glitches. Like if you end up solving the puzzle, but its not the color it wanted to fill the board it will fail you (although the game just says to fill the board with the same color). Also on one of the levels one to two blocks when the colors shift will just get detaches from its larger mold and get stuck behind other colors causing a fail.
 "Coloruid"){kind=icon}
 "Zombotron"){kind=icon}