I think i may have an answer. I saw a some black light bulbs at a local pep boys auto shop. auto accessories aisle. The black lights are used enhance the radio face plate. There 2 types of black light bulbs 2" and the 3" models. The problem is the black light bulbs are connected to a small 1"x2"x1" inverter??. these can be plugged to your cigarrete lighter. price about $20/unit. With a little creativity, you might get cool interior effect.