i didn't say there was a dearth, i said that many have changed their skin tone, as they were deemed by their peers, record company, so called advisers to do so. I didn't say it was right.
One of the greatest black entertainers of all time, Nat King Cole was very dark skinned, but in photo's you wouldn't think so. So they were air brushed, on television much the same situation arose, so he used make up to lighten his skin, a perverse form of racism, too dark to appeal to the white audience.