There's some subtlety here. Colors are percepts- phenomena that happen in the brain. Wavelengths and radiation describe natural electromagnetic phenomena, not p

There's some subtlety here. Colors are percepts- phenomena that happen in the brain. Wavelengths and radiation describe natural electromagnetic phenomena, not percepts. Example: Infrared has no "color". It's possible to induce the illusion of colors in the absence of light altogether. I appreciate that the article took care with this language, as it's a deep and fascinating topic.