[mikehartigan]

I added a pretty authentic looking Fender logo on a Tele project a few years ago that was simply black on a light colored wood. I used a cheap clear waterslide decal I bought on ebay, printed on an old HP inkjet printer. When it dried, I sprayed it with clear lacquer so when I wet it, the ink didn't run (I was actually surprised it worked so well). Slid it onto the peghead, spent a few minutes positioning it and pushing out the bubbles, then let it dry. A few days later, I hit it with about ten coats of lacquer and it looks darned near perfect!

I've been out of the printer market for a few years, so I don't know what's available with respect to metallic inks. You may need to go to a professional for that. The Les Paul logo in the photo posted by @mirwa makes me believe what you're looking for is very doable.