Imagine a little osplated valley where the water is contaminated with colloidal silver that turns everyone blue
The babies cpme out brown but after they stop breastfeeding they start taking in that silver and turning blue. And everyone thinks it's just normal childhood development like yeah you get taller you get hairier you get bluer that's what it be like
And then an outsider mpves into the valley and she's brown. And evreyone's like lol why are you an adult and still brown? You're the weird one, for not being blue. But she's drinking that local water and she turns blue and everyone's like Praise Be! The Gods Have Made Her Normal