You are reading a single comment by @deerheart and its replies.
Click here to read the full conversation.
-
Yes actually sort of rusty purple brown ish.
https://kunsten.nu/journal/danmarks-aeldste-museumsvaegge-eftersyn/
Photos in this article shows is quite clearly. It was used in a couple of Danish museums back in the day.
It is related to the development of sulfuric acid.
You are gonna have to Google translate the article.
Hulsroy
@deerheart
the red goes a bit in the brown direction, right?