Colour Symbolism in Ancient Mesopotamia
academia.edu
academia.edu
"We may never know for sure, but one peculiar fact casts the mystery in an interesting light: there is no word for “blue” in ancient Greek. Homer’s descriptions of color in The Iliad and The Odyssey, taken literally, paint an almost psychedelic landscape: in addition to the sea, sheep were also the color of wine; honey was green, as were the fear-filled faces of men; and the sky is often described as bronze."
Edit: Interestingly, Russian appears not to have a single word for blue [1]. Instead, light blue and dark blue are thought of as separate colours.
http://www.abc.net.au/radionational/programs/bodysphere/feat...
Some of the comments are interesting as well, such as that Homer might have been blind.
It all becomes very subjective.
Makes trying to understand consensus reality a real mind-bender.
Also tangentially related to light and colo[u]r perception and how dramatic it's effects can be:
http://www.supermemo.com/articles/sleep.htm (Search for "Phase response curve (PRC)") https://justgetflux.com/