It's funny how "Blackbody" and "blacklist" can be seen as a problem, without ever questioning the application of black and white to people, who are normally neither black nor white. I suppose "coloured" was intended to remedy this, but it's fallen out of favour.

FYI - blackness has always had negative connotations in the same way darkness has: it's associated with the night, and not being able to see. I'm sure these sentiments are universal, and existed in the west before the influence of race.