Those are fiberoptic cables in the fretboard. They're usually seen on custom guitars, I believe there aren't any standard ones that come with them.
For example, I've seen some Ken Lawrence Explorer with blue fiberobtics in it. Max probably still has the picture, he should find his way in this thread. :lol:
This Turkish guitar player has his own guitar line and they all come with orange fiberobtics actually. I've tried one at a store, played like a dream and the fiberobtics looked really cool in person.
PS: I've actually jammed with the guy too, he's a lot fun. :P