I am pretty sure it is just shitty craft-store gold paint. My family and I were in DC for a short visit a couple months ago and I could see gold coloring on light fixtures and other places which seemed so out of place, I am certain some boot-licking cretin in the National Parks dept arranged to have it applied to appeal to our Dear Leader. But yeah, I am thinking we will need a giant roll-away dumpster at the White House to handle the clean-up when he is finally gone.