Sparkly Gray Beaded Radio City Sign

This past week, I have been busy beading my Radio City Music Hall painting! I have almost completed the 3rd vertical sign. I stitched horizontal rows using gray hex cuts, 11/o and 15/o seed beads, as well as charcoal gray triangle seed beads. This sign really sparkles! Next I have to bead a blue outline around the gray then I can work on beading the backwards letters on the 4th sign. How do you think I should complete the surrounding buildings?