Here's a cut/paste from the website:
Everyone gets the same silver Nintendo DS... boring! We've got the cure for you and your new handheld... a CAD-designed, full-color, five-piece Nintendo DS skin kit! With your order, you'll receive a ready-to-apply DS full-color skin with a high resolution full-color design printed on premium grade adhesive-backed cast vinyl. The skin is then covered with a clear protectant layer for the ultimate in durability! All full-color skins use a patented repositionable/reusable adhesive backing for fast, easy and accurate installation. The best part - they can be removed at any time without leaving any sticky residue when you decide to change to a different look!
I do admit some of them are pretty cool, like Black Carbon Fiber, Match Head, and a few others I can't recall.