I have a black 97 z28 vert with a black top that is starting to get light spots across the top back support area. I'm not sure if it is mold?, or if the top is fading. I've noticed it has gotten worse over the past two years and I am not sure what I can do to stop it. Any ideas would be helpful. The top is still in good shape otherwise and I don't want it to get any worse.

 

I have that too. To be honest, I see it on a lot of light colored (older) tops.