I always find that one fascinating, as I live in a world when 90% of everything is some shade of green or blue. Of course it's a linguistic thing, rather than a colour discrimination thing.
I think the important lessons here are:
a) Humans are bad at naming things.
b) When people talk about 'colour' they usually mean something more than just hue.
c) Languages evolve in interesting, but not necessarily sensible, ways.
d) People's ideas about colour are hopelessly entangled with their cultural and linguistic background.
e) It gets really fun when your cultural and linguistic background is mismatched with your lived experience of colour.
f) If you want to specify a colour in a universal way, you need to use SCIENCE, but don't expect that to clear up any arguments.
(I maintain that Makita is Blue on the basis that it's very clearly Not Green. Green is a dark shade of Generic Poo Colour, and since Makita is closer to grey in intensity, it can't possibly qualify for Green status. Not least because a green that light would be DeWalt.)
