I was wondering about the physics of color, and now am interested in finding out if there are any standard resources on the meanings or appearances of colors.
For example, color associations in mythology or folklore of the rainbow.
I know in the zodiac there are colors mapped to the specific stones, that would be an example like I am looking for. What google brings about however is a bunch of stuff on the psychology of color saying 'red is for danger or vibrance' etc., but there is no reference on where they are getting these features/observations from. I would like to find religious/mythological/folkloric references mentioning specific colors, like how earth/wind/fire/water are a thing of 4, or the 5 colors in China, that type of thing.