Would be interested myself in black ones, I need something to be able to mindlessly hop into my car after a day working as a mechanic to protect the seats.
I have cheap Wal-Mart ones now, and they already saved my seats. Was burning out a bushing and had some melted waxy bushing on my pants, and it left a smear on my seat cover, about 6 inches long.
I know it would have ruined the seat, as the work pants with the bushing guck on them have been through countless soapy hot washes and soaking for a long time once or twice in my washing machine and the black stain is still on the pants.
So, I know it would be a permanent stain on my seat. Got to love seat covers, they fit tight enough to look like regular seats.