Not at all a fan of Guitar Hero. In fact, seeing as how I actually play guitar, my thoughts are that GH is to music was Tommy Wiseau's The Room is to cinema.
But I love the fck out of murals on guitars, even fake plastic pretend ones. Hell, if I knew how to do it properly, I'd splatter paint a phoenix onto my Squire. And I love the fck out of ponies. And I love it when two copacetic things that I adore are combined. So ultimately, this is a massive win.
This is actually a lot like what I did to decorate the CD for the copy of Come Clarity by In Flames that I bought for my youngest brother.