Yes, that's right, it's a Prince-themed polish - Lippmann Let's Go Crazy and then a brand I'd never heard of, a mini of Initial Lacquer Viola:
Viola is a pale blue-violet base with blue-violet glitter - pretty straightforward, in the Evil Queen mode that I've noticed lately, but a little more blue-toned. Somehow it escaped being named after a queen and got named after a Shakespeare character instead. (Or, it could just be the color. But I like the Shakespeare explanation better.)
Initial Lacquer doesn't seem to be in business any more. Let's Go Crazy, though, is a current color.