I remember when the new FDNY Probies were wearing black, a kind of round plastic helmets. I think they were called: "Metro's".
As I remember, they were used on a trial basis by a few companies in the FDNY. I think one company might have been Ladder 19 (?) in the Bronx.
Here in Connecticut I know a few places that used them too. Most didn't last too long here either. The guys didn't speak too favorable of them.
I would visit "The Rock" and watch the group of Probies training and wearing those helmets. Each Probie would have their last name written on a piece of wide masking tape put on their helmet.
It might have been sometime in the mid to late 80s when the FDNY had tried out those Lids.