I can't help you with the seizure cluster, but for the pedal. Buy the pedal you want. PM SunnBass for his Pedal Mod Podge tutorial. Download a Mr Sparkle image from the Net and size it in photoshop to your pedal, print it out. Whack it onto the pedal using the Mod Podge tutorial as your guide. Boom, done and 'cause it's not for sale, for your own private use and you're not using it for self promotion and you don't have a lot of money to be extracted from a protracted IP Legal Action... No fear of retribution; You have the pedal you wanted with Mr. Sparkle.
That's a really good idea. At one point yesterday it crossed my mind that my college roommate, who is a graphic artist/cartoonist and a guitarist, could easily hand paint me any of the Simpsons characters on a pedal and would probably love to do it. He does incredible work, and I think I could probably come up with something I'd really like. Tempted to go with Krusty and a pissed-off Sideshow Bob in the background. Itchy and Scratchy would be good too.