Tae Kwon Do.This pic is a great illustration of the belt returning to white, showing a return to purity. This is the purpose of the progression of the belt colors in TaeKwonDo we have this quote at the Lucas martial arts academy.
The best fighter is not a Boxer, Karate or Judo man. The best fighter is someone who can adapt on any style. He kicks too good for a Boxer, Throws too good for a karate man, and punches too good for a Judo man. by Bruce Lee