Ok - Shukokai karate has recently added a red belt into the system. It goes like this: White (no grade) Red Yellow Orange Green Blue Purple Brown 1st tag (One horizontal white stripe round the end of the belt) Brown 2nd tag Brown 3rd Black As far as I know - the colours started when nobody had different coloured belts. because it was considered bad luck o wash the belts, the more you trained - the darker your white belt became cos of the blood, sweat and tears of training! hehe Hence the further development of the colour system. But I also heard that Judo was the first Martial Art to develop the colour system of belts? In TaeKwon Do it is very interesting. the belt lifecycle is similar to a plant lifecycle. White symbolises innocence. Yellow is the Sun nourishing the seed planted (new martial artist) Green is the first shoots (representing the leaves) Blue is growing towards to sky - as skill develops. Red (different) but symbolises danger of nearly being black belt. Black symbolises proficiency! So that's my 2cents!