supercarp ... Blacks are not black due to sunlight
Super-crapt ... is what you posted. Blacks are not black due to sunlight whereas Caucasians are white due to its diminished amount in Europe.
Plenty of Japanese are far darker than any European... but for quite different reasons than what you note.
Blacks are not totally stupid (you... that's another case)... and typically avoid the sun at all costs during the high sun hot day (as also do most animals in Africa). Their 'day' starts at 3pm and goes to sundown and beyond... just as with animals.