So has ' Black', yet Black lives matter is freely acceptted
And please explain how ' People of Colour' is acceptable, which, if the people are of a colour - therefore they are coloured.
Rationality and consistency are not what is desired. Nor is accuracy, since everyone is coloured unless they're wearing a full-body Vantablack suit and even then only if you don't count black as a colour (since colour is a function of light and black is the absence of light).
Take me, for example. My skin is about as pale as human skin gets without a person having albinism. So my skin is coloured various shades of pink and a really faint beige and some lines of blue(*). Other parts of my body are coloured black (my body hair), white (also my body hair and part of my eyes and part of my nails), dark brown (my head hair), medium brown (part of my eyes), black (another part of my eyes) and that's just on the outside and just what I can think of off the top of my head. Inside...I don't know, probably mostly red because of the blood.
The entire idea of race is crap anyway. It doesn't correlate with reality. It has no basis in biology. It's a purely political thing and humanity would be better off if everyone decided to to get rid of it rather than focussing only on people who obsess on it with fanatical devotion.
* I know that human blood isn't blue, but we're talking about appearance here and in someone with skin as pale as mine veins look blue.