As confirmed by the Stamps Store:
It means no more black helmet for the Stampeders, thank goodness. But it also means we lose some other good looks, like the Lions’ two helmets (I’m hoping they keep orange because we have enough black helmets in the league). The Eskimos’ green helmets are gone, as are the Argos’ white helmets. I wonder if it will be a one-year thing or something more enforced moving forward, similar to current NFL rules.