Holy Smokes Batman! The Bat-Signal Shines Over Pittsburgh

Citizens of Pittsburgh, do not be alarmed! The Bat-Signal didn't go up because the Joker is up to no good in your town, but rather to show love for the crew of the new movie The Dark Knight Rises, who have been filming in the Pitt and may be staying in the city through the winter. The only question I have is this: why does the Bat-Signal look like it's being projected from the Green Lantern's ring?

http://www.ology.com/screen/batsignal-flies-pittsburgh