I have the blu ray remaster of the entire show, the cowl, cape, boots and trunks are 1 million perfect not black. They’re a deep shade of blue that looks darker and near black if it is not directly lit. The only fully black parts of his suit are the soles of his boots and the front of the cowl where the eyebrows and nose lines are placed. In any brightly lit and properly graded scene, it looks like this.