Yes, you can bake the headlights and take the housing apart. There are still a few things that are still sketchy at this point.

1) Do I have to remove the front bumper and headlight washer before taking out the headlights? (for e46 if you have to remove the headlight washer)
2) The amber reflector inside the headlights, is it glued on or snapped on? It would be so much easier if I can take it out to spray paint it.
3) How and where to wire the interior lights so the angel eyes will have the dimming effect when locking/un-locking the car.