The black shirt should never be used for a Barca kit ever again. It doesn't make any sense afterall. The away kit should represent a light color that differs from the home kit which has always represented a dark color for Barca's Blaugrana shirt. The reason that the home kit colors has been chosen a little lighter this season IMO was indeed because of the introdcution of the black away kit so that both kits don't have represent a very dark effect (Fail, but that's how the hack who designed this season's kits was thinking!).
Anyway, I hardly liked many of Barca's away kits. IMO two away kits were the best ones for Barca, which I hope they use again for the next season:
and
Though no black for the shorts and socks in the second pic as well.











