Grid Color Game v1.1

Grid Color Game ver 1.1 The goal of the game is to make the grid a solid red by clicking on a certain "cell" to switch the color from red to blue and vice-versa, but the twist is all adjacent cell will also switch color thus making the puzzle difficult. ver 1.1 update - made the puzzle color based - able to select the size of the grid from 3x3 to 5x5. - able to select the difficulty of the puzzle by selecting the number of color rotation. Special thanks to Paul Bahlawan and Roger Gilchrist for giving me such a great advice on optimizing the code.