There's no standard for kyu (colored or non-black belts if you prefer) belt. In Japan for adults the only colors are white, brown and black, and they don't have sub ranks for brown. In Canada it goes yellow, orange, green, blue, brown. In the US they tend to have three brown belt ranks (meaning a US brown belt will often be equivalent to a Canadian green belt (ie both sankyu).
But that's okay, there's no standard for black belts either. A shodan might be a guy who's just refereed and been in judo for a long time, or might be a world champion. Judo belt rank tells you almost nothing about the person until you get to the kohaku belts ...6th and above. In fact, generally you're not a judo expert until you get there (same way you're not a high school student until grade 9).
BJJ is much more standardized in what belts mean. Judo belts can mean almost anything; what's standardized in judo is results. Olympic gold medal for instance means very good, local tournament medalist means recreational competitor. There are no belt divisions in judo; world champion means just that, best in the world in your weight division... same as in wrestling.