Yes, our grand-daughter, blondie, blue eyes, pale skin, with both 'white' British parents- was a mistery to the medical staff as she had a conditions which is rare in UK and only in certainy racial groups.
After a while, they took my daughter aside and asked her if she was sure who the father is. She was incensed- but the doctor explained about the medical condition. Daughter than explained that although she is white, and so is her OH and both sets of grand-parents- one grandmother was part AFrican, and one grandfather was part Indonesian. And it all fell into place. DD1 now always puts 'mixed race' on forms- even though she is white- because she comes from 9 nationalities, but 3 distinct racial groups. I got in touch with cousins back in Cape Town- and they told me 3 of the girls have that (non life threatening) condition. Problem solved.
And since then, and especially now since we have met many of OH's relatives from all over the world- who come in all shades of brown to dark brown - we have come to realise that in most people's mind 'mixed race' means darker, but not too dark...
We have also come to realise that those who are darker, have it a much more difficult path to success, and have experienced much more discrimination than their lighter sibblings. And many just had to flee Apartheid South AFrica in order to escape this, and even post Apartheid.
3nanny6 - Trevor Noah is a South African writer and comedian, with his own channel in the USA. In the middle of the Apartheid period, his Soweto mother met a Swiss man and had a baby with him. Hence the title 'born a crime' - he had to live his life hidden - not dark enough for Soweto, but far too dark for any other place. Looking at him, most people would say he is 'black'- although he is half white. My OH was not born a crime, he and his sister (stunningly beautiful still at 79- but white with an 'exotic' look, like our DD2 and our nieces- one was a model for the top UK agency for many years due to that very special look) - became 'crimes, - OH at the age of 2, his sister at the age of 7. The only way to remain together was to emigrate to the UK- which they could as grandad was British.
They grew up as British white- because they happened to be born light enough ... and this was never questionned or discussed.