Why is there a coloured tab on the belt?
I’ve heard people say to me that if a black belt has a red patch on his belt, then he is a red belt. This is quite a misguided, but not unheard of interpretation. The truth is that the coloured tabs on the belt are a part of the grading system. They are there primarily to hold stripes. These tend to be black on every belt, apart from a black belt, for obvious reasons.