Originally posted by drDalek
Different colored belts at different levels might be useful to the sensei to quickly identify the people who are at different skill levels in a large crowded dojo.
We have a fairly large dojo with upwards of forty to fifty people showing up at some of our evening classes. We only have white and black belts with anyone being able to wear a hakama at any time that they wish regardless of rank. I don't think my teacher really has any problem identifying the different skill levels in the class as I'm sure he can just watch for a few seconds and tell...