That NYC shot is a load of bull. I happen to be familiar with the area. It is NOT predominantly black and white, but in fact is fully colorized. See for yourself: http://goo.gl/maps/qu5gE.
Shenanigans, ArtWall. SHENANIGANS!
(I have no problem believing the rest of the cities are, in fact, black and white. After all, they aren't New York!)