In a recent cause celebre in Britiain concerning whether a fetish party attended by the head of Formula 1 motor-racing had a Nazi theme, one of the women involved was German. She denied in her evidence that her having been referred to in German by the man concerned, who tho English spoke German, as being "black', had racial overtones:-

"... the court heard that the word 'schwarze' (black) was used during the session - Mr Mosley denied it was used in a racial sense, or to describe someone who was black. Mr Sherborne asked witness Woman B to explain what the word meant to her.
She tugged at her mane of *black* hair and declared. 'I am a schwarze. That is what it means.' " [report in Daily Mail, London]

This may be relevant as it is a German game that Azizi is analysing in this thread. It appears from this that, idiomatically, the man in the game need not even be a sweep, but could just be taken to have black hair.