Qualia of blue

What makes up the qualia of blue? Where does the meaning of blue actually lie? In the rays of blue light itself, or in your interpretation of blue? The fact that we perceive such "things" as blue light or macroscopic objects lying at distinct places is due, partly at least, to the structure of our sensory and intellectual equipment. Even if blue light were abundant in the universe, it would still require a human brain to decode the message of blue light. Whatever we see as "blue" is a construct of the brain, and blue may be merely an interpretation of otherwise white light. In Moby Dick, Melville wrote,

"Consider that the mystical cosmetic which produces every one of her hues, the great principle of light, for ever remains white or colorless in itself, and if operating without medium upon matter, would touch all objects, even tulips and roses, with its own blank tinge-" (H. Melville, 1851)

I love Melville's description of mind as "medium upon matter". Our access to the mystical cosmetic is largely mediated through our senses and other factors.