I have also read a lot of nde accounts where people report seeing colors they can’t see in our waking reality, so I’m delighted that came up in the article. Also, foragers, particularly in indigenous cultures, tend to have heightened color and smell perception.
I learned a great deal about colors from my 64 count box of Crayola Crayons. Who didn't like using the name "burnt sienna"? I loved periwinkle pink carnation and mulberry. I loved sorting my crayons by color too.
Fun fact. When my children were younger, our dog would eat the crayons they left out and poop a rainbow of different colors. I never thought to identify the different shades of the colors he pooped by name though...thank goodness. hahaha
One would need a new lexicon of "dirty" colors. Scat-scarlet? Poopish-purple? Turdy-teal? The lawn is the limit.....Imagine how disturbing it could be to a tetrachromat!
Not sure where to post this, so I figured this was as good a place as any.
A team of researchers at Shanghai Jiao Tong University has found that the human hand can be used as a powerless infrared radiation (IR) source in multiple kinds of applications.
This link will take you to their findings as published in PNAS, and this link will take you to a more layman's discussion of it.