I read a little while ago that pink used to be for boys, and blue for girls — the idea being that pink was more fiery, with pastel blue being calmer and more fe

I read a little while ago that pink used to be for boys, and blue for girls — the idea being that pink was more fiery, with pastel blue being calmer and more feminine. This changed sometime in the early 20th century. The source was some parenting/manners/etiquette book from 190x.