you're right, I'm just arguing that when we talk about colors we talk about the subjective perception of it, the thing that we see, which is what is usually referred to as color in any normal conversation. I didn't know there was a different definition of color which was a synonym of wavelength, in that case you're right. So as you say, the debate is arbitrary because it's about different definitions of color.

However, both measurements of wavelengths, the qualia or subjective one and the numerical wavelength or objective one, both exist only in our minds. There exists a measurement if and only if there exists someone that measures, even if it is an objective measure