The two best merch colours are black and navy. They've already got one of them.Had Port not been the only other team in SA I’d advocate for the Crows to utilise black more as a main colour for their merch. Heck, they probably should do it irrespective of Port. I get the symbolism of using those colours but three primary colours is never going to look good on merch. Black is the colour of an actual Crow too and looks far sleeker.
That being said I think they deliberately avoided black initially as every SANFL club has at least one colour represented in the Crows colour set except for Port, but it’s not 1991 anymore and Port isn’t fighting for entry, the Crows should embrace the colour black.