Glad you liked it. When they say it's not encouraged, but don't say it is a disqualification, you can still pretty well assume you're not going to win any conformation dog shows. Usually doesn't mean the dog won't make a fabulous pet and usually means you can still compete in venues other than conformation, like say agility or rally. In saying "usually" I am thinking of other breeds where some DQ colours can mean serious health consequences for the dog, like white or blue merle in some breeds.
If you can't find any S. Africa Staffy sites or people you might want to check out the Champdogs U.K. website. Lots of folks there very knowledgable about Staffies.