This is very important for you to know why they use them.

#Alejandra: Red because she goes to Bowser's castle.
#Annie: Yellow to hide ghost tracks.
#Arlina: Hazel to match her eye color.
#Aleyah: Mint green for her dress.
#Rudie: Indigo for her normal hair color.
#Selara: Cyan since Corrine doesn't like her favorite color.
#Gidgette: Pink ever since she had a crush on Andrew.
#Kalina: Dark purple to remind herself of her past.