My Transformers Classics Astrotrain is starting to have a little bit of a yellow stain on the side. Reminds me the how old SNES' got a little yellow looking with time....am i doing something wrong? Anyone knew how i can fix this or at least stop it from getting worse?
Is direct sunlight hitting it? Without getting into a lot of detail, plastics have agents in them to prevent color change from the sun, air, and other factors. Some plastics are better at resisting the color change while others don't last long at all. The TF wiki has an entry on this.