Earlier quoted context omitted.
> It's pretty standard in the US, due to our history, for colored people to just feel out of place in 9/10 white environment. Calling them "colored people" certainly doesn't help.
Isn't it interesting how "people of color" is a common self-designation for (most frequently) black people, whereas "colored people", literally synonymous, is considered offensive? Of course there are valid historical reasons for it, but many people (probably including GP) don't know about them. The euphemism treadmill can get quite exhausting.
Like most things considered racially offensive, it's less about the dictionary definition of the word and more about what the connotation is. It's the same reason someone in an interracial marriage would hardly ever say "my black wife" but would say "my wife, who happens to be black," if it were relevant. I'm 100% positive they'd never say "my colored wife" unless they were 130 years old.