Either click anywhere or press the space bar to see the effects! Press the number buttons to switch effects! Just don't hold the space bar or else there will be some lag, though it is pretty cool. Also, if you want the effect to be a "rainbow," press the up arrow, and to get rid of it, press the down arrow.
This is my first project, shared and unshared, that uses cloning, and I wanted to try it out. Also saw all of the cool other mouse effects and wanted to try it out for myself! The sixth effect is just a little change of this effect: Screensaver animation! by @Photon7Games