Again, I think we're this is more vocabulary confusion. When you said red, I think you meant the causes of one experiencing what we call "seeing red". When I said red, I meant one's subjective experience of red, as opposed to the subjective experience of blue. If one was changed so that when the photons of the wavelength that's normally seen as red were instead seen as what's normally seen as blue, there would be a difference is what is subjectively experienced, even though one can't rigorously define it.