If you visit Japan, you may be surprised that Japanese traffic lights have blue on go rather than the green in the U.S. Actually, green is the standard there, just as red is, they just have a different definition of green.
It is rather common that things which should be basically the same for everyone, like a color, have not only different words but different meanings.
A new study of basic color terms found that in cultures that have remained isolated, there are a lot fewer words for the tens of millions of colors we see.