Me and my ex, met, dated, moved in together and married in Hastings, we never had a problem with anyone on the street or in a pub etc. In my experience our disapproval level was less than yours. That could be just chance, or perhaps the fact my ex wife's heritage was directly African, not...
My ex-wife is black. I agree with your point entirely based on my direct experiences too. Racism does work both ways, but not all those connected to my wife had the chip on their shoulder and neither of us felt self conscious about being a mixed raced race couple either.