Smoking Copenhagen

Behind our local shopping centre there is plenty to look at (Blip) including a new "air" bridge for bikes that I still can't photograph right. As I went down to this view-point, these guys let off a smoke bomb. They're photographers.....Americans. I think they thought I was disapproving and shuffled off before I could chat to them. 

Selective colour rarely adds anything to a photo and I'm not sure it does here but it was an interesting challenge to try it with smoke.