[mhomde]

Speaking of red... In Sweden we have a color called "Falu red" that's the icon red that long has been put on many cottages and houses. The pigment is based on the copper in the copper mines of Falun. The metal helps against fungal infestion and absorbs UV rays helping the paint last longer. There are some areas where it's the only color allowed to help preserve their heritage.

https://www.theawl.com/2017/12/falu-red-the-color-of-bucolic...

As a bonus or most famous sausage is called "Falukorv", it's also red.

[efraim]

The pigment in Falu rödfärg is not based on copper, it's iron oxide, a byproduct from the copper mine.