My older relatives told stories of adding coloring into the margarine during World War 2.
I sometimes leave a stick (or less) of butter out on the counter. (I was shocked the first time I saw this at a middle school friend’s house. But eventually I decided it’s fine. Years later when my mother came over to garden during the day, she’d sometimes leave me a note to say “the kids left the butter out -I put it in the fridge”.)
Per eggs, I always refrigerate.
excerpt - “It turns out that, here in America, eggs are refrigerated because the USDA requires eggs sold for consumption to be washed, processed, and then refrigerated before they come anywhere near a store’s shelves. On the other hand, most European and Asian countries have reached the opposite conclusion, requiring that table eggs not be wet-washed, and also not refrigerated.”