I'm having a guitar built, as well as a custom case to go with it. I posted this in the 'mods' section, but thought I would post it here for those who don't visit that section. Scott Ouderkirk is the artist... he takes a case, applies primer to the working area, does his thing, then some coats of lacquer to protect it (remains very rugged). His site is www.ScottOuderkirk.com and here is the case he did for me (scroll down the page):