When City Hall went dark last night at 8:00 for Earth Hour the sky glowed pink, thanks to a heavy mist and what I'm guessing might be sulphur plasma street lights.
Last night's celebration was a well-attended blast, with a storyteller in the courtyard followed by drumming outside the main entrance.
Some lights stayed on. They had to: you can't have people bumping into each other, knocking over plants and tripping over curbs. But we enjoyed being together in the semi-dark, not needing electricity for a time.
Update 3/31/08: Smart husband says probably not sulphur plasma lights but sodium vapor lamps. Which is what I meant.