The hot wife thing in my experience has no color boundaries. Like everything else females have preferences. Height, weight, color and cock size for some. If you truly love sex and are in that mood you settle for what's available. Cock size has always been a mystery to me. I mean seriously i pick up a group of guys in a casino in Vegas for example. We get up to the room and one has a small cock. Do i throw him out, i do not. That would be very impolite and hurtful. It would put a shadow over a possible good time. His friends might leave as well in a show of support ruining the entire night. Besides size is not a absolute guarantee of great sex. I've had big ones where i would have had a better time with a big dildo.
Color for me is not a preference. I've had great times with every possible color of cock. To limit i think why would i do that. In our travels we have been to places where the closest black cock is hours away by plane or car. No possibility of a hookup. We have been to places where the blacks outnumber all other races. Barbados one of my favorite places. We traveled there every year for two decades to dive and party. Plenty of black cock on that island . I guess what it comes down to is if you limit sex to such a small group like black guys or big cocks your not a hot wife.
I mean the black population is less than 30% and over half are females. Probably about half of the males are under age for sex so by color you've limited yourself to about 7% of the population.
Size Every publication I've seen classifies the average cock at 4 1/2 to 6 1/2 inches to be the average that has to be 51% or more of the entire group. I've only seen one where the listed below average at 38% so with that graph only 11% are over 6 1/2 inches . Again a very small number in a very big group.