Finished setRandomColor. It has three check boxes. If the first one is checked, the color will be randomized. If the second one is checked, the FX will be randomized. If the third one is checked, the shape FX will be randomized(it can also end up as the water brick's shape FX, which is not on the spray can list). I made it this way so you can randomize the brick in any combination you want. If you leave all the check boxes unchecked, it won't do anything at all.