credit: https://en.wikipedia.org/wiki/File:Linear_visible_spectrum.svg

source https://commons.wikimedia.org/wiki/File:Cone-fundamentals-with-srgb-spectrum.svg

Source: https://www.color-meanings.com/color-symbolism-different-cultures/

image from wikipedia: UK House of Commons

https://commons.wikimedia.org/wiki/File:Rgb-compose-Alim_Khan.jpg

image source: https://upload.wikimedia.org/wikipedia/commons/3/34/RGB_pixels.jpg

source: Peter Aldhous, NICAR 2016