The light blue interior plastic panels on my 79 Camaro (like my front kick panels) are fading and turning tan/light brown. Car has always been in a garage and has a car cover for winter storage.

First any fix besides repaint?
Second what can I do to prevent condition getting worse?

 

I haven't tried this but it's supposed to restore your color,check out the hydrogen peroxide part.
https://www.wikihow.com/Fix-Faded-Pl...gen%20peroxide.

 

Thanks for that link! I will experiment with those suggestions. I spray painted the small, easy removal parts with a paint for plastics and it works pretty good. Some of the remaining plastic parts are not as easy to remove so hoping the article suggestions work.
I can’t figure out if it’s age of car or sunlight but the car is stored in a garage with a cover so I’m thinking it’s the plastic breaking down.