Japanese used to have no distinction between blue and green

as a radical colourblind: colour is a construction of the mind. Colour names make no sense. The only thing that matters is contrast.

Look, man, I'm not concerned with what middle earth or Mordor or whatever can see, I'm here on the planet U S of A.

Wasn't purple a "royal" colour back in Roman toga times? Maybe it was called something different?

See also: ‘robin red breast’ to describe the European robin, which very clearly has an orange breast:

It’s the same reason why ”Violets are blue”.

Before that basically everything towards the magenta part of the spectrum was all just called red.

And before that we have people looking at colours entirely differently, like Homer calling the sea the colour of red wine.

Which my Greek teacher would explain by saying "my pencil is the the same shade of yellow as your book is blue".

The concept of purple is older than English, though. I guess when English chose to adopt it is the main question, but should be clarified that the term where "purple" derives from goes back to the ancient Romans, who recognized it as a distinct color used for royalty given the difficulty in obtaining it.

It does have me wondering exactly when red onions first arrived in the UK, or what the Romans may have called it (potentially before those dirty Britons got their hands on it).

I also know that, when boiled, they yield a very rich, red color. Could maybe be named "red" due to that? Some Orthodox Christians/eastern Europeans traditionally use red onions to dye eggs for Easter.

I was always curious about this! I’m bilingual and I always get mixed up because they’re actually called “purple onions” in Spanish. I always forget which language calls it which, but knowing this is definitely helpful!

In Bangla, we call the color peyaji, which is basically "onion-y". It's also what we call onion fritters, and they're absolutely delicious.

Edit: Just remembered that we also use it as a slang for fucking around. Not sure where that came from lol.

Black tea refers to the visible degree of oxidation of the tea leaves - yellow, white and green teas all do the same thing. Similarly, white grapes are called that because they produce white (clear) liquid (though it's clearly yellowish so they should really be called yellow grapes...).

And maroons are escaped slaves that set up their own communities in the Caribbean.

No need to insult them

In Japan they're called blue onions - neither blue nor onions.

Not with that attitude

Pickled red onions are next fucking level. They are so goddamn good its kind of crazy