I suspect it will be a somewhere between, "a long time" and "next Kalpa" until the BKs allow talented negro acts in their inner circle.
I've yet to see a picture of any black people in their Golden Age heaven either.
One of my favourite guys in Madhuban that I made a point of catching up with each trip was from South India, although he could have been mistaken for a West Indian, know what i mean? Black as the night to a blind man and almost negroid facial shape.
On one trip he was particularly melancholy, and the discussion came around to his expressing that his ideal in the Golden Age was to have a quiet farm somewhere a long long way from the palaces and royal family - you don't need to be a psychologist to read something into that, and the discussion did continue to reveal his personal experience that there was indeed discrimination based on skin colour (not even ethnicity, skin colour).
How can these anachronisms still exist in the 21st century? In a "spiritual" community?
It's historically deeply embedded into the culture - from the time of the invasions of the sub-contintent from the Caucasus and Iran region by the Arians (people of the Ore) who as victors were of course more righteous, and the darker skinned indigenes were not Aryan, were the conquered, hence inferior ...
Some northerners also interbred with the later Caucasian Alexandrian conquerors, so you see many from the north who could easily be taken for Mediterranean types. Then the main Muslim invaders were from central Asia or Afghanistan who are also of that lighter skin type, to be superseded by the most advanced, and coincidentally the whitest of them all, the Brits (and Portuguese) etc. Historically, the lighter skinned have, being conquerors, been wealthier. With wealth comes health and education, so appear superior, the status and type of person to aspire to be.
The sindhis pride themselves on their lighter skin shades - it reflects and inflates their caste consciousness and their aesthetic sense of beauty, which is drawn to light skin and the slightly overweight (although the movie screen is affecting tastes for the latter).
But again, European Christians portray Jesus as blue eyed and often blond. Chinese Christians have icons depicting Mary, Jesus and saints etc with oriental features ...
Those like us are better, others are, well, different, strange ... other.