Floating "Face" in Vivid Blue

Photo date: June 19, 2015. Photographer: Mark Mahin.

The photo below was taken in Grand Central Station in New York.

Below is a closeup of the orb that almost seems to be "selectively" located in a central position (being in the middle of the middle window).

We seem to see a face on the left, one that includes an eye and a smile.  The orb seems to be moving.