I've been wanting something like this!

Xbox-Central has been working on these new controller cases for you wireless (or wired) 360 controller. While I've never held one, reports from different forums indicate they are of relatively high quality plastic and feel very solid.

If you've been looking for some special way to make your controller stand out from the rest, this is definitely what you need. Don't be worried about taking apart your controller either, I've changed my original Xbox controller's case and it was very, very simple.

Here's a bit from the official website:

"What defines the gaming experience? More and more, people are beginning to feel that gaming is more than a surreal experience in a virtual world that goes beyond tackling monsters and puzzles. The total experience can also involve challenging and even re-constructing the original casings to make for a unique gamer's signature - an activity widely known as casemodding. As Xtreme Enterprise (well-known for their Asterix PSP faceplates), continue to possess gamers with high quality products, it now enters the Xbox360 arena by giving the community options for a multi-colored 360-gaming environment: Introducing Project Fantasy360-Controller.

Project Fantasy360-Controller is the first of several upcoming casemod products for the Xbox360 platform that is manufactured and designed by Xtreme Enterprise. This casemod product provides creative gamers the opportunity to swap the original Xbox360 wireless controller shells for their favorite alternative color option. In addition to being perfect replicas for exact fit specifications, its high quality as well as ease of installation will doubtlessly bring many hours of creativity and fun to most, if not all categories of gamers."

Check out the products page here for more information.