Alrighty, I'm back in town now and I think about ready to get this moving forward. Haven't seen much feedback on the colors or other options, I think right now I'm leaning towards going with 2 of the black NYC bridge buttons with different bridges on each side (2 buttons/4 bridges) since those photos are primarily black & white, and then 2 world trade center buttons, one white and and one black. I'll try to get the final bridge mock-ups loaded tonight.