And here is my interpretation (pretty straightforward):
The paper, punch, ribbon, and white pearls are all Stampin' Up. The metal flowers are Making Memories, and the one blue pearl is just something from my stash...origin, unknown. I love black, white and gray, but think adding one little pop of an unexpected color makes it more interesting.
The rest of the Gotham City Stampers design team made great cards. Hop on over to Heidi's blog to see what they did.