They're pennies. It's some big charity thing they're doing at Rockefeller Center. 100,000 pennies or something.
A tough color challenge with these penny photos. It was overcast and a little dark so the main light is coming from shops - basically yellow. But there's also streetlight light, which is weirdly orange, and there's Christmas light coming from the Plaza and that's kind of red. So do you go with the light you have or do you correct to the light it would be?