While not dealing with the so-called ‘colour’ of people, it is worth considering the article “Are Black and White Colours?” by software developer, Adobe, which stated:
“Some consider white to be a colour, because white light comprises all hues on the visible light spectrum. And many do consider black to be a colour, because you combine other pigments to create it on paper. But in a technical sense, black and white are not colours, they're shades.”
https://www.adobe.com/au/creativecloud/design/discover/is-black-a-color.html