its black vinyl put on the roof to make it look like its all glass. its available in the market place. i got mine done by a local sign shop. its an alternative to painting it, which some people do. this way if i dont like it or want to change i can just peel it off. it cost about 80 for the overlay then you have to pay someone to put it on because its pretty hard to do. the sign shop i used only charged me 70 total but i was the first they had done and they didnt think it would be as hard as it was.

thats roof overlay