This combination of dark purple with turquoise sparkles is so cool. Unfortunately I didn't think of it myself, but that didn't stop me from shamelessly running out to buy Rad Purple this morning so I could copy it ($3.99 at Target). Of course Heart Breaker from Walmart can make almost any color amazing and costs just $2.00. If you don't already have it get it along with Oh Baby and Busted.
This is 4 coats of Rad Purple and 1 coat of Heart Breaker, pics taken in direct sunlight.