Posted 2010-09-28 02:04 (#80333) Subject: The language of colours
"It turned out that it wasn't just the Ancient Greeks who never said the sky was blue. None of the ancient languages had a proper word for blue. What we now call blue was once subsumed by older words for black or for green. (In fact, this is why in Japan green lights are actually a bluer shade of green than in the rest of the world. The word used for the green of traffic lights is ao, which used to mean "green and blue" but now means blue. Rather than change the word, they changed the colour."