I do Shotokan karate. I'm a purple belt now, but I find it useful to know the kata after the one I need for my grading. It gets stuck in your memory, I think. Our belts go: White, orange, red, yellow, green, purple, purple white stripe, brown, brown white stripe, brown two white stripes, black. P.S. Does anyone know any Ju Jitsu/Kung Fu classes for 13 year olds?? I am always too young to join