Colours are not real. Electromagnetic wavelengths are real (unless you are in a simulation), but your experience of them is entirely in your head.
You could be seeing blue, but you were taught we say red. Those who suffer from synasthesia will see numbers or sound but still call it red.
It’s all made up, it’s in your head. You’re imagining things and yet want me to respect your made up world and how scientific you are.