No, blue is what’s perceived as blue.
Was Neptune not blue in 1400 because nobody had perceived it yet?
It was blue because its color was within the set of colors that were commonly perceived as blue. It’s the color that is defined by human perception, not each individual instance of said color.
Was Neptune not blue in 1400 because nobody had perceived it yet?
It was blue because its color was within the set of colors that were commonly perceived as blue. It’s the color that is defined by human perception, not each individual instance of said color.