I started thinking.... if I were to buy a Rock T-Shirt which would it be?

I think I'd be no different than most... choose one from my era... which means mostly the 60's and 70's. I think I'd go 'psychedelic'... used to love psychedelic art. I think some of the old Grateful Dead T's would be nice. Strawberry Alarm Clock? Cream? Those would work as well.