I took a break in between challenges and game up with what I think was a pretty wonderful gradient. I started with two coats of O.P.I. - Be a Dahlia Won't You? and then did tapering layers of with Petites - Craze. I do recommend enlarging these photos to see the true awesomeness.
Not being able to leave this alone, I added a few coats of Nubar - Black Polka Dot
Click to enlarge the last two or they just look weird
I'll be back to posting for the challenge later in the day! Thanks for reading :)