(Original picture: Smile Precure - rainbow healing) I don't have a group name for them yet, but I have given all of the characters names!

Pink: Cure Amaryllis, Amashita Ritsuka
Yellow: Cure Citrine, Nakamura Sayuri
Blue: Cure Sapphire, Kisaragi Hiyori
Red: Cure Phoenix, Nanashima Mitsuru
Purple: Cure Firework, Hanabihara Takeru

As you may have noticed by Firework's name — yes, in civilian form, Firework is a guy. :3