Speaking of color pigments, did you ever hear about “Mummy Brown”? Like the following article says, “it’s precisely what it sounds like”. https://www.artsy.net

Speaking of color pigments, did you ever hear about “Mummy Brown”? Like the following article says, “it’s precisely what it sounds like”. https://www.artsy.net/article/artsy-editorial-inside-library-holds-worlds-rarest-colors https://www.artsy.net/article/artsy-editorial-inside-library... (The article only mentions mummy brown briefly so Ctrl+F for it if that’s the only part that interests you. Personally I think the whole article is worth reading.)