One of the comments there (paraphrased): “This is a funny but sad result of European colonialism.”
That comment over there is idiotic: the obsession has to do with the Brahmin caste, which has kept mixed as little as possible with the natives since the Indo-Aryan invaders arrived 3,500 years ago.
No. It is a universal preference. In the darkest societies as well is in Nordic circles Mamma is apt to comment on son’s girlfriend, “But isn’t she a little dark?”