Really cool! I love the idea of switching between the colors to see what was invisible. It added the right amount of difficulty to the game, which kept it exciting. By giving the player an option to chose the difficulty, it also kept the game exciting! The cool down on the switch can be annoying at times, though it was probably necessary to have kept the game balanced. Good work!
Thank you! Yeah I added the cooldown to prevent you from just spamming it which would mix both views together and completely nullify that feature. Though I have tested it on the hardest possible difficulty and always thought it was okay.