Yes, I colored her.
I think that a Black Swan version for Duchess needs a lot of black, feathers, pearls and delicate fabrics.
She has fabric wings that follow her arms till they get wraped in her bracelets. 
I think she could have pointed feet and wear simple and realistic ballet shoes.
Her make up is intense with black wings over her eyes with lavender details. A carmin lipstick is a delicated final touch.
Do not come for her. Cause she will destroy you with majestic, gourgeous and delicated steps all over you.