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How to Tell When Old Paint Has Gone Bad

The paint that adorns my living room walls is a light yellow hue known as “Lemon Ice.” It works perfectly with my decor and is a huge a step up from the marigold color that was there when I moved in. In the years since I painted, I’ve kept the leftover paint in my closet to use to touch up tiny scuffs and scrapes and keep my walls looking fresh. But how long can I count on my backup supply lastin