I think you're right. My brother-in-law is a professor at Berkley. A few years ago he said that there was a definite drive amongst some in American academic circles to make the word 'black' (when used as an adjective to describe a person) certainly as frowned upon as 'negro' and ideally as...
Another example of how views have changed: When Jamaican-born John Barnes was playing for England anybody who said he wasn't English and he should be playing for Jamaica was a knuckle-dragging racist. Now someone who says Jamaican-born Raheem Sterling isn't English and he should be playing for...
I think the term 'colored' dropped out of normal use a while ago, but I see where you're coming from. I saw an interview a few years ago with an elderly American man whose facial complexion indicated that his skin had a higher melanin content than an average European Caucasian (Is that safe?) He...