My HPs was kind of a stickler is all. We didn’t use black for protection. I don’t remember what color we used.
Once she got mad at me for accidentally kicking across her living room one of a pair of carved wooden dogs she had left out on the floor aimed at the home of a neighbor she was pissed at. These items were supposedly full of all sorts of “energy” and she thought I should have detected that and so not blindly stumbled into a smallish object left out where anyone would walk in the course of entering. In retrospect it’s too bad it wasn’t her dumbass loser boyfriend I’d kicked across the room.