I mean, how many interracial couples do you see around you? In PA, USA, I see around 98% of white girls with white guys, 99.9% of Indian girls with Indian dudes, and around 85% of Asian girls with Asian guys (the rest are exclusively with white guys). Interestingly, even among white-white couples, I've seen the majority of blonde girls with blonde guys (the rest prefer black dudes for some reason).

Yes, it's a relatively small sample (just a US state), but I've seen enough to conclude that at least when it comes to ethnicity/race/skin-color, opposites don't attract each other. There's a term for it—homophily.