As some of you now I just got back into this after almost a decade off. I still retained a Yamato 1/60 YF-19 from a decade or so ago. It has always been on display in a wooden bookcase. No protection from dust (I don't have much dust). It's never seen direct and possibly reflected sunlight. My office has northern exposure and there are trees in front of the window. Smoke free and temp controlled. The YF-19 is quite yellow. What are precautions if any that I can take with my new collection so I d