The Color Blue

It appears that the color blue has only recently gotten a name. Ancient documents have no reference to the color, and many conclude from this that we as human beings have only recently developed the ability to see this color.

However, an alternative possibility is that the color blue was very rare to see in the past, and that it was simply interpreted as a shade of green.

Today we have blue skies and blue seas, but that may not always have been the case. It is only due to the fact that our Sun emits white light that we have blue skies. If our Sun was a brown dwarf, our skies would be perpetually pink and golden, and there would be hardly any blue to be seen anywhere. Our oceans would be pink or wine colored. Even blue flowers would look less blue due to the color of the light shining on them.

Could it be that our Sun at some point in relatively recent history changed in color and brightness? Could it be that the Golden Age really was golden in the sense that everything was bathed in a pleasant golden light?