I remember in one of the Coloured Fairy Books en.wikipedia.org/wiki/The_Langs'_Fairy_Books and I’m not going to try to find which one, there was a story where a kid was hanging out with the fairies and they went to a house and his in the thatch. They sprinkled pepper on the daughter so she’d sneeze. “If she sneezes 3 times without a bless-you, we can steal her!” She does twice, no blessings. On the 3rd sneeze the kid yells BLESS YOU at the top of his lungs, the fairies scatter and she’s saved. So at the very least, I make sure nobody is stolen by the fairies. Colored or otherwise.