Purple-Green Orb Makes It a Strange Sky

Photo date: December 4, 2015. Photographer: Mark Mahin.

The photo below (taken early this morning) shows a groups of orbs near a building in New York City. The oddest one is the big one near the center, which seems to be a combination of purple and green.  The same weird color combination is shown in this photo.

There was no rain, fog, mist or precipitation on this night. The air quality listed on airnow.gov was "good," with a rating of 33 (anything below 50 is considered good).