Liights make pickups buzz, and if the LEDs were directly under the pickups the noise would probably be horrendous. There's a guitar out with lights under the frets, the idea being that you can learn scales and chords with ease because the appropriate markers light up via software. Great idea, but every review I've read says that there is a lot of noise when the lights are switched on. So I'm guessing it'd be the same here. Only worse :P.
