Photo by myself at 42nd Street and Fifth Avenue.
The main branch of the New York Public Library was bathed in a light blue light, Monday night. Candles were placed up the front steps, perhaps in honor of Martin Luther King Day.
Many buildings use LED lights these days to light their exteriors. It's an energy efficient way to dramatically change the look of a building with a flick of a switch. The entire color spectrum can be programed in. The top of the Empire State Building uses LEDs, too.
Related posts: On Lost Icons and the Dakota, Tudor City, in Detail, and Lunching at the Oak Bar, on Central Park South.