Lol this is the same for me, i'm VERY fair and they are all dark
My aunt never looked like the rest of her family. She's also a complete bitch but that's another story. As my grandfather got older and she got nastier he told my mum her evil sister was a by-blow of my grandmother's and some bloke from a frigate on stopover in Fishguard while he was away in North Africa. She WAS born in 1942 so who knows.