Oh sheet, i get u now! Okay, there's this guy that does work on lights, he's from lahore, sometimes his work can be desi but at other times he produces good stuff. He's posted some taillights on this thread (headlights faarig hain):
Or, a very cheap but good look would be to get the entire taillight smoked with ~20% paper. It will be a subtle, yet striking change i am sure!
P.S. There is also a guy in Fsd who says he can do work on all lights, he is not proven although he told me that he has done some Vitz taillights of someone nearby to high quality! Allah behtr jaanay..