probably the best picture I managed to get of her. This is basically her ref.

She has purple butterfly-ish wings, purple hair, light purple skin, and a purple dress. Her jewelry is all silver and purple as well, and if she paints her nails, they're some shade of purple or sometimes silver. Also, most of her accessories have a moon theme to them. Her makeup is usually a darker shade of purple, sometimes highlited/accented with silver or something.

Alternatively, she has a "dark" version, but I don't use it much.