Back when my '92 was still under warranty I had the dealer replace the back portion of one of the rear seat backs because it ripped where the zipper was. Well, the morons did it with slightly the wrong color and I never took it back. As the years have gone by the color is WAY wrong now looking green compared to the rest of the interior being factory gray and irritates me every time I see it. So, what are my options since the interior materials are mostly unavailable from GM now?

My car has gray interior with custom cloth seats and split rear seats BTW

 

i would say give either hawks or thirdgen resourses a call, you could also try house of camaro the yhave a lot of used stuff

other than that look in local junk yards or on ebay