Modern era figures yellowing already?? HELP!!

Posted in Action Figure Chatter

What do you guys use to store loose figures?

Anyone know if I am doing something wrong?? I just pulled out some Star Wars figures from around 2005-2007 and I am already noticing discoloration on some. Even carded ones! Mind you, all my loose figures are stored individually in poly zip bags like most collectors. Carded ones are stored in comic book boxes and all of them are in a dark closet out of sunlight or extreme temperatures. Plus I am a strict non smoker! I am baffled to say the least. Stormtroopers and Biker Scouts from around this time have slightly yellow torsos now. And a Vintage Collection Lando I just pulled out is discolored on the torso as well! Is this just the way things go? I can't imagine there is anything else I could've done, but if I am missing something, please tell me!!