All the ones that ive seen have been black. Its really more of a trim piece to make the lock cylinder look a little better. I'm pretty sure the lock cylinder is bigger than the hole, otherwise it'd fall through when you pulled the key out, so lighting it from behind is out. So it looks like (to me at least) your only other option here is to get a custom piece made of clear plastic, wet sand it til its foggy and light it from inside the door, fiber optic style. You'd have to make sure you wrapped the led in black electrical tape so your window, speaker grille, etc didnt glow... Could be a really nice touch if done correctly, though. And you get extra points for posting an idea we haven't seen here a million times over. lol.