I recently went out to the Big Bear Bronco Bash in SoCal and man was it fun. I saw a tough new product called Pro-tect liner. It is a new spray on bedliner company in SoCal used for many things. My buddy just got his Jeep sprayed in all the areas normally covered in diamond plating. He also sprayed the factory fender flares and rock crawler bumpers. We got up against a few rocks and bushes with no damage at all to the flares or body panels. The coating was hard to scratch and cleaned off by pouring water over it. Im coating most of the interior and exterior of my 90 Cherokee when it is up and running. They offer alot of new colors and this stuff wont fade like Rhino lining or Line X, its gauranteed for life to never fade. They even fix old faded spray on liners with a Rev2 coating. It stays glossy and they even offer a few metallic colors check out their website.
Pro-Tect Liner-Home page of the premium bed liner source - see the pics of my friends Jeep I attached.