Nietzsche wrote somewhere:
‘How differently the Greeks must have viewed their natural world, since their eyes were blind to blue and green, and they would see instead of the former a deeper brown, and yellow instead of the latter (and for instance they also would use the same word for the colour of dark hair, that of the corn-flower, and that of the southern sea; and again, they would employ exactly the same word for the colour of the greenest plants and of the human skin, of honey and of the yellow resins: so that their greatest painters reproduced the world they lived in only in black, white, red, and yellow).’
Weird, if correct. But it explains the ‘wine-dark sea’ I guess? But maybe not:
‘Today, no one thinks that there has been a stage in the history of humanity when some colours were ‘not yet’ being perceived. But thanks to our modern ‘anthropological gaze’ it is accepted that every culture has its own way of naming and categorising colours. This is not due to varying anatomical structures of the human eye, but to the fact that different ocular areas are stimulated, which triggers different emotional responses, all according to different cultural contexts.’