We've all seen those basses and guitars that light up. The guitarist flips a switch and his fretboard lights up. people like Billy Shehan has this. This is probably very exspensive though. I've also seen some like stick on lights that go abve or below the bridge. It makes a cool light effect. The one i saw was a big circle that grew and shrunk over and over again. Anybody know anything about these, and where to get them? And the price range.