I believe that blacks display more racial preference today than whites. Are they racist? I hate that term. We've all paid our dues and most of us show proper respect to all people who are treating us as equals.
Don't worry about having a chip on your shoulder about provider preference. You sure can't take them to court over that, so screen the showcases and reviews for ladies who fit YOUR preferences and go from there. There are so many here that will see anyone who is safe and respectful that you won't get around to those who have different client preferences.
Welcome to Dallas (when you get here). This is a very diverse Metroplex and you will find just about everything you want here both in providers and acceptance.