goose,
i changed out all the exterior amber bulbs. the rear signals are now red instead of amber. the front markers and drls are hyper whites (similar to those bimmian interior lights). i picked them up from a local car shop. i'm sure you can find them at most car shops. i prefer polarg bulbs, but they didn't make the bulb type for the drls so i had to go with cuzo. the cuzo's don't match my other lights the way i like, so when they go out i plan on seeing if PIAA carries that bulb type. I suggest that you get polargs also because the color is nicer. I can wait til you get the price for the interior lights because that'll be a nice upgrade.