Big Purple Orb in Grand Central Station

Photo date: December 30, 2014. Photographer: Mark Mahin.

The photo below was taken in Grand Central Station in New York.  It shows a large purple orb on one of the windows.

In my photos I have seen countless blue and white orbs, quite a few pink orbs, and occasional yellow, green, and orange orbs. But this is only the second time I can ever recall seeing a solid purple orb. Below is a closeup. I can faintly see what seems like a face, but the details are so faint and borderline that I will not label this as an orb face. But see my posts labeled "air orb with face" for 38 posts that seem to show air orbs with faces.