“That’s why they are good with the term “people of color”
Apparently, they have no education, either. “White” is the presence of all colors while ‘black’ is the complete absence of all color! LOL
That depends on if you are dealing with addition of light (as in your computer monitor) or subtraction of light (as in mixing paints). Far more people are familiar with and can visualize the paints - they learned it with water colors in kindergarten.
On the monitor they really don't know (or care) what's going on with the pixels. They just know the color is changing.