It seems reasonable to think that human evolution favored those brain reactions to sensory input which were most effective for survival and breeding; and that would include discriminating wavelengths within a particular band as the perception red or blue or green &c, and discriminating a particular mouthful of fruit or fish or leaves as the perception sweet or salt or bitter &c, and discriminating a particular sound as the perception loud, soft, harmonious, familiar, unfamiliar, &c.Don't you think that this leaves a complete mystery as to why the activity of neurons gives rise to experience (assuming that it does)? There seems to be no connection at all.
You may recall those red numbers that Arnie's Terminator 1 saw down the side of his vision, a computer readout of data which apparently related to his environment. In humans this readout is unnecessary because the processing evolved as internalized from the beginning.
If the human perceptions of color, taste, sound &c as the means of processing sensory input weren't as they are, what would you expect to find in their place?