I think you need to go back to school, hon. Or just do your actual research, you know, instead of immediately jumping on this like it's wrong just because you don't believe it should be possible, without any proof on your side. Meanwhile, I have the fact that it's actually taught and proven as, you know, actual science.
Not only can it potentially be caused by long dormant genes, but mutations also occur, and, as you mentioned, extreme albinism can also be a cause. So I absolutely disagree with your statement.
If you're looking for high profile examples, or just don't wanna bother actually attempting to educate yourself, just google it. I'm sure the results will be delighted to enlighten you. Heck, online media love jumping on stories of couples that had a baby with a totally different skin color, and the dad gets pissy or whatever, only to have it confirmed by a dna test that the baby is indeed his. Also, when asked about their most awkward deliveries, I've often heard obstetrician's use an example of when a child had the wrong skin color, and how they had to explain to the parents that it was normal. Those stories are always fun to hear, especially the parent's reactions XD
Anyhow, thank you for your opinion, but I must say, good day sir.