I can't see how the color of your skin can make you a better player, but the experiences that many have had in their lives, and their musical upbringing certainly can. I know there are a lot of great musicians and singers that started in all or predominately black churches.
The first musical experiences I remember was sitting by my mom on the big bench behind the church's B3, or C3. She would let me play when she went to practice and showed me how to turn it on even. However, she had no "soul" in her music and had to have the notes in front of her to play. She played it exactly as it was written, no more, no less. As a result, neither she or the choir director inspired a lot of feeling in the hymns or gospel music done in that church. About as far out as they got was saying "let's all stand for the last verse!" Probably why they are still looking for those Sheaves to bring in after all this time!
Some few years ago I went to a wedding in Arkansas with a friend of mine who happens to be black. If I'd had that kind of music at my first wedding, I might not have gotten divorced! They had B3, drums, guitar, bass and piano and a choir that could have toured with Ray Charles! It was the first church I'd been in that had something other than a piano or organ.
Anyway, having said all this, I can't think of a single black musician that I've heard playing anywhere who I thought was really lacking. Well, maybe Chas, but ...
Smile Chas, you know I'm joking and I love you!