There was still relatively few black players who came through until the mid to late 1980's, so prehaps there is still not the depth of available black manager over the age of 50.
There will be more black managers coming through in the years ahead, but its important not to over-promote based on the colour of the skin. The two black players who stand out to me as making decent black managers if they choose that route are Clarke Carlisle, and Rio Ferdinand who has seemed to grow up and mature a lot over the last few years. On the flip side if someone wants to appoint someone like Jermaine Pennant as a manager then they will be making a huge mistake.
It the same with Black Football pundits. I personally can't stand Garth Crooks and Mark Bright who i think are boring, awful broadcasters, but like people like Damien Johnson who talks a very good game, and Chris Kamara who despite being completely bonkers always has a decent opinion.
If you looking for taboo's in football the only one that still exists now is homosexuality, and when a player or manager finally comes out of the closet, then that will challenge and change peoples perceptions. There is quite a few footballers and managers who are rumoured to be gay but until someone actually comes out it will remain a taboo.
