The Cirnos have different hair colors if nobody's noticed.
Look!It's true!!CoolReally?!Ah, I won! I win an extra one.Ah, I won too!Waaah!!Cirno, that's "Atai"!! ใใใ(atari, win) and ใใใ (atai, a version of "I/me" Cirno uses) look very similar.