These are really good, but you should give a seizure warning. After all, these ARE flashing colors. I recommend you give it another name, like... Areo Rave Cursors.
Rainbow Windows Aero Cursors
For some reason I like to take the default Windows 7 Aero cursor set, copy it and edit it. And since I'm kind of *very* addicted to rainbows, this just makes sense.