But Jigoro Kano was a Judokan not a swimmer, at least I don't think he was a swimmer.
Are we talking about Judo or are we talking about swimming? Judo and swimming are two different things.
I was a competitive swimmer for nine years, the only thing you would wear when you swam would be a bathing suit and goggles if you needed them. You wouldn't wear anything else such as ribbons, they would slow you down.
Now if you're talking about the ribbons you would get for winning, blue ribbon for first place, red ribbon for second place, white ribbon for third place, the same kinds of ribbons you get for running or for just about any racing sport, that's a different matter but you wouldn't wear those ribbons while you were competing.