Black hair, darker skin. I think, personally, blue and green go together better than blue and purple (and purple and green not at all) so I'll probably do the dress and outfit in blue and green. As for purple, I'll probably do that with her accessories; perhaps a green necklace, and blue earrings, headband, purple flower petals with a blue core?

Anyway, I'll work on the colors a bit, and see how it turns out. If you have something more specific in mind, let me know. Also, with black hair and dark skin, I may not color the eyes at all - dark complexions usually have dark eyes.

Keep in mind, the pink and purple scheme is before you in line.