They could always bring back the old gem: “Guaranteed not to go pink in the can”.
So distinctive is salmon’s orangey-pink hue that Crayola named a crayon after it. It’s an accurate representation of the flesh of wild salmon, but not that of farmed salmon, whose meat is naturally gray. Or at least, it would be, if salmon farmers didn’t spike their artificial diet with pink-ifying pellets.
…Thanks to a 2003 lawsuit, they have to alert customers to the fact of “added” coloring.