The usual stuff people locked in there would do. Sweat, piss, etc.

Actually, at least where I was the room was a light green, most likely because the blood is as visible on it while better covering stains

Not really, at least in sites like gutefrage (german site where the biggest dumbasses of the world unite) There were a lot of questions about them trying to use it as their first Linux distro because they magically care about privacy

Yep, people are so stubborn they would rather risk their entire online presence than learn that penguin hacker thingy with the white text. Also the Walter is wet

Yes, tho it days it dosent store it, ill leave it up to you what you do whit that.

Why tho, OpenSUSE has yast, and a way better package manager than fedora