Interracial couples?

Hi, as you know, "interracial" in cuckoldry almost 100% always refers to a Caucasian/white couple and a black bull - either the wife submitting and fucking the bull or they both become the black bull's slaves/submissives - and other variations with those roles.
My wife (black) and I (white) have a different flavor of cuckoldry. She, too, finds black guys more sexually attractive, like in the aforementioned more traditional cuckoldry situation white wives do, but her being black herself (to me anyway) adds another layer of excitement. For us cuckoldry isn't just hotwifing, but includes elements of BDSM, in that my wife is dominant, she denies sex with me, only fucks other men, and when she does, it is specifically not for the purpose of entertaining me - I don't have any say in or knowledge of when or whom she fucks.
I was just curious if what we have is just a rare variation of cuckoldry or a complete outlier. As a submissive, I guess along with my masochistic instincts, it actually adds another layer of "exclusion" psychologically to the denial that not only does my wife not find me personally sexually attractive for her taste to the point of not letting me have sex with her at all, but she actually prefers her own race over mine, when it comes to sex. I am sure this setup is probably rather repulsive for some people, but again, kink is kink and this setup does turns on both of us a lot.
I have a blog on Tumbler, where I have shared this in the past and I made connection with a handful of other cuckolds like me - white hubby with gorgeous black cuckoldress Queen wife, who only fucks black bulls - I wonder if any of the users here have a similar situation.
z

I often wonder if black men are annoyed, maybe even repulsed, when they see a black woman with a white guy and set about making her see the error of her way by persuading her to have sex with black men again.
Peter C