Yeah, I've noticed that too. It seems to be "the thing" in TV ads lately. I don't have anything against mixed-race couples myself, but I hate when businesses push an obvious PC fad or agenda and don't think anyone can spot attempted manipulation when they see it.
How about those “home security company” ads which depict a white male thief/intruder invading the household of a black family? Those ads really get me steamed, they are so absolutely upside-down!