How to restore the faded color of PVC outdoor storage sheds?

I have two old PVC storage sheds. The top and base were a nice green/teal color but are now faded and look old and tired (like me!). What could I use to restore the color? Armor-all doesn't last long, I'm afraid any oil would not be good for the plastic. I'm thinking some kind of auto wax but am unsure of what kind.
  6 answers
Your comment...