Not to the best of my knowledge, but there are numerous websites that sell skins to put on your phone. They're similar to a sticker, and they're custom sized to each specific phone model. On a lot of the sites, you can even customize them by uploading a photo or image and having them make one out of that.
One of the things I whined about right after getting the Instinct was that a metal battery cover would be a little nicer than the plastic one, but... between the D-Lo Jam Jacket I started with and the cheapie $7 ebay hard snap-on case i currently use.. i haven't thought about it since. Food for thought, though, either as an official accessory or for the phone crap manufacturers to jump on.