the black belt was explained to me by my master to be a modern symbol of the sash the hwarang were given upon passing their royal examination. The colors that trimmed their lapels were either blue, red, or yellow (depending on their level of service)symbolizing the flower of a certain korean persimmon. so why do we even bother with our current ranking system? are we conformists to the geup/dan? would anonimity in the martial arts benefit us?