Floating butterflies

As I was sitting this afternoon in front of the cafe when the sun finally made its appearance, at some point I suddenly became aware of 2 white moths floating around, one of which had landed in my hand, fact that I got aware of, busy as I was in a conversation, only once I had been playing with it without even being aware of it. I released it, hoping I hadn't damaged the beautiful creature, and wondering what this all meant. Moths are usually brown and quite ugly, those two were as white as doves, and beautiful.