Also, has anyone tried to whiten an unbleached one at home? If so how did that work out?
Not very well. I have one that was purchused unbleched. I've bleched it and used oxystuff. I haven't tried peroxide, but then again... I don't care anymore.
It has turned a dull, almost a faded, light cream color, but I can live with that.
Dunno about long term effects of blech, but I would just by a bleched dogi instead of the alternative. They look better and you don't stand out or get called a "judo guy" like some will joke.