Um you know you can just pick whatever skintone you want right? Would it not make more sense for you to complain over the character creator allowing you to create a blue human? Black humans can still easily be present on the sword coast because they traveled there, perhaps because their background as a sailor? Or they have a parent that was a merchant from a far away land. But blue humans, thats a lot more rare. Perhaps a witch cursed them, or its somehow part of their warlock pact. Its still possible within the games lore but way more uncommon than having a dark skintone.
