you're wrong because you seem to think that colour is subjective. it's not, blue is the same for everyone and everyones brain (other than those that can not distinguish colours and the blind) can see blue the same, and interpret it the same. we don't say blue is blue because its not red, we say blue is blue because its blue. blue is also not yellow/green/grey/black/white/violet/cyan, but it can be used to help create some of these colours. make some sense?
What? Okay, I do think it's fair to assume that the color that you call "blue" and the color that I call "blue" share the same physical characteristics. That is, the phenomenon that you see as blue is the result of light with a wavelength of roughly 475 nanometers striking your retina, and the phenomenon that I see as blue is ALSO the result of light with a wavelength of roughly 475 nanometers striking my retina, but you and I have no possible way of comparing our subjective experiences of this photo-phenomenon, so it is impossible to determine whether or not we experience color the same way. Because it is impossible to gain another human being's subjective perspective, you cannot possibly sit behind their eyes to check and see if we do, indeed, experience blue the same.
As a matter of fact, when you realize that our understanding of the color blue comes with a series of associations and abstractions, it becomes pretty reasonable to assume that it is extraordinarily unlikely that you and I will experience the color blue in an identical fashion. When you see blue, it evokes a full range of associations, thoughts, understandings, even emotions. When I see blue, it will evoke a different range of associations, thoughts, understandings, and emotions, because my life experience has been different than yours.
The basic point is that your claim that everyone experiences blue the same way is untestable at best, with a deep theoretical foundation suggesting that it is mistaken.