If chrome isn't your thing, you might like the Fantasy360 controller shells from Xtreme Enterprise. The shells come in all kinds of Skittle-licious colors as well as black and white. The shells look more or less like the colored, semi-transparent S controllers for the original Xbox. They should be available by the end of the month, and I can only assume that Xtreme Enterprises won't be liable if you attempt to eat your scrumptious looking controller.
The read link points to Xbox-Scene, as Xtreme Enterprise's Xbox website was down at the time of this writing.