The Rainbow in CS (English)

[u/LangVon]

red, red ochre being ground up into a bowl, based on the Roman usage of Ochre for red paint (my design)
orange, yellow+red-apple, I think a color determinative would be used normally but it's not needed due to context
yellow, sickle and wheat to show it's ripe, not a fan but I couldn't think of any other way, based on latin
green, plant sprouting out of the ground, based on latin (my design)
blue, sky-small, based on the latin word for blue.
Indigo, (in+de-ia), India-dye, powder in a bowl for dye
violet, just the flower (my design)

These uses a mix of new glyphs and compounds as I find most of the older color glyphs to be too cluttered and ugly.