The purple below doesn't look that purple in the photo, but it is. It's like a plum purple, really warm and rich, definitely dark. If you are looking for a fabulous date night purple, or lovely day look for winter, Sinful Colors Fig #961 is a great choice. The color is shiny but not glittery and goes on thick. Two coats is plenty.
Penny also really likes Pink Forever #313, which is a lovely pale pink, very feminine. You can find Fig and Pink Forever on Amazon or your local retailer.
If you are looking for fun, kid-friendly colors you can also wear (share with your daughter!), definitely look for these super affordable, pretty shades!