Maru asked:

I have had this question for several years:

*Who determined that blue is blue and not pink? or

*Who said that red was named red and not car?

============

In my view, this is purely convention. Any particular sound or letter combination is attached to an idea
quite arbitrarily (with the possible exceptions of onomatopoetic words (like "hiss" and "bang", which
imitate what they name). So the answer: just a few people who once said "OK, that sound will do for
that (pointing to it) color".

Tim Sprod