Dominatrices near the Wittenberg Platz whose sexual services were signaled by the colours of their boots, laces and ribbons, sometimes worn in combination. Black boots: buttocks cropping (lying on bed). Brown boots: asphyxiation by boot or stockinged foot. Cobalt blue boots: forced feminization; penetration by female. Lacquered gold boots: bound feminization; physical torture. Poisonous green...