where to find this interior part?

anyone know where I can find a replacement interior dome light bulb cover for the rear one (the piece of plastic that covers it)...when i bought my civic it came without it and i'd like to have it covered instead of seeing the actual bulb and wire.

1. Honda Dealer
2. Junk Yard

I would go to the dealer if it were me. That cover is pretty cheap, I broke mine on the 91 si. The part was under $10.00 @ my cost.