None of this has anything to do with today's nail art; just some thoughts. :)
The base color is Funky Fingers Let the Beat Drop. I used my fingertip to rub a multichrome powder (which I reviewed a few months ago) into the almost dry polish. The pattern I stamped came from Born Pretty stamping plate L050 and I used Kleancolor Metallic Black.
This is definitely one of my favorite designs in a very long time. :)