The original post said dark-skinned Limelight characters.
Everyone says that, literally everyone.
Northern Europeans are most likely have what we would call “monolid” than other Europeans. So yes, white people can have slender eyes or monolids. However, no one really says what their character’s ethnicity is. It’s always “S/he’s white.” White people aren’t just one category, of course looks will be different for someone whose South European and North European, this is what most people are trying to say. Anyway.
But a charater’s hair is an important part of their look… Not everyone wants to make their black characters relax their hair, it’s hard to create a story with all black cast when we don’t have enough cultural hairstyles for them.
Because most POC take their time to go and create feature threads, you can do the same if you please.