Just my attempt to provide a helpful color guide.
From left to right we have Red She-Hulk, Starfire, Nova (Frankie Raye), She-Hulk, Mystique, Angela (from Gargoyles) and Futura (from Filmations' Ghostbusters series from the 80s).
It was kind of difficult to find two purple skinned characters. Green skin? Yeah, no problem there. But there were very few girls with lavender skin. So I cheated and colored Angela in a darker shade of purple than Future.