I am currently taking Okinawan Go Ju Ryu in America. We also incorporte Go shin jitsu as well with the normal Go Ju Ryu. For us it takes about 4-6 years before we reach a black belt status. Then if we wish we can go to Okinawa to train and become a Sensi or Sampi for that matter. But like you guys say almost everything stems from the stances. I am interested to see how the rest of you guys or girls, belt colors progress. Our dojo starts white, orange, green, brown and then black. Also in between the belts there are three pieces of tape and then progress to the next color.