Yeah, it sounds weird. But there are many African-European people who are ignored by much in the media. But surely you have seen a black person with a British or Scottish accent? Well at least that person was born in the EU, when the UK was still a part of the EU. Nonetheless there are many African-black people who were born and bred in Europe who speak perfect German, Swedish, and Italian.
The colours of the flag are based upon the Pan-African flag, which are black, green, and red.