sun damage/discoloration

i took the side moldings off yesterday and where they were its like a very very faint yellowish colour (like the colour glue leaves behind) you can barely see it but it still bothers me and i'm wondering if there is anything i can use on it to make it the normal cavy white

You may have to repaint them, I've had no luck trying to fix discoloration problems, I sure hope someone comes a long and tells us wwaht we can do about dis coloration problems.

that is glue, get some goo-gone and clean it off.