Joachim Hoff's post highlights an important aspect of this discussion.
The historical record on gi and belt wearing actually supports belts for no-gi.
In fact, it looks like Jigoro Kano, founder of Judo and thus progenitor of Bjj through Mitsuyo Maeda, was giving out black belts for 11 years before the modern gi was even introduced. He just had them training in whatever was convenient which included some outfits that will be very familiar to no-gi grapplers.
Articles on Judo history talk about Kano giving out black belts around 1886 and students wearing loin clothes and shorts cut off above the knee with sleeves cut off above the elbow.
The actual gi, as we know it today, was not introduced until 1907.
"It was not until three years later in 1886, that Kano saw the need to distinguish between beginning and advanced students and began the custom of his Yudansha wearing black belts, to signify the difference. "
"The “Keikogi” or “uniform for practice”, known as the “Judogi” in Judo, was not introduced until much later. At this time, all practises were carried out in formal kimono’s, loin cloths or more commonly shorts cut off above the knee and sleeves above the elbow. The formal “Keikogi” full uniform with trousers and the smaller width Kuro Obi, (Kuro – black, Obi – belt), as we know them both today, were first introduced in 1907."
http://www.shiseiryu.com/originsofju...dingsystem.htm
This article at
www.judoinfo.com basically confirms much of the information above and goes on to say the following about colored belts:
"Other colored belts for students who had not yet achieved black belt originated later, when Judo began being practiced outside of Japan. Mikonosuke Kawaishi is generally regarded as the first to introduce various colored belts in Europe in 1935 when he started to teach Judo in Paris. He felt that western students would show greater progress if they had a visible system of many colored belts recognizing achievement and providing regular incentives. This system included white, yellow, orange, green, blue, and purple belts before the more traditional brown and black belts."
http://judoinfo.com/alphabetical-lis...neil-ohlenkamp