www.artsy.net/article/the-art-genome-project-a-brief-history-of-color-in-art

Of all the pigments that have been banned over the centuries, the color most missed by painters is likely Lead White.

This hue could capture and reflect a gleam of light like no other, though its production was anything but glamorous. The 17th-century Dutch method for manufacturing the pigment involved layering cow and horse manure over lead and vinegar. After three months in a sealed room, these materials would combine to create flakes of pure white. While scientists in the late 19th century identified lead as poisonous, it wasn’t until 1978 that the United States banned the production of lead white paint.

More reading:
www.canva.com/learn/color-meanings/

https://www.infogrades.com/history-events-infographics/bizarre-history-of-colors/

http://www.colorsystem.com