So I am looking to buy a RS Prop masters stormtrooper outfit but have some serious questions about the options they offer which is PVC vs ABS. I think I want the ABS as it is been stated to be a more sturdy material but the issue is I've also been told it yellows when exposed to sunlight. Here are my questions.    1. How long before or how quickly does the ABS armor yellow? i.e. will standing outside for a few hours or a day for an event turn it yellow?  2. Can you not wear ABS Ar