are there any blacked background fog lights? ive looked around but cant find any

ive never seen any. You could tint them with stick on window tint. Comes off easy if you don't like it. Can get it in different darknesses as well.

wouldnt it melt the tint if i put 8k in it?

doesn't matter what color the HID is, they are all the same temperature.

And no I don't think so, your windows get pretty damn hot in the summer and it doesn't melt then but I am just guessing.

I'm thinking of just lightly smoking mine or getting some red film.

http://www.grandprix.net/ubb/ultimatebb.php?ubb=get_topic;f=1;t=004227;p=2

There is a write up in there by Bobby to make covers to "black out" the fog lights.

Use a Campbells soup can to trace the tint,
it works.