"Naturalness" itself is a concept and not "natural" ;-) But there are very different thoughts and concepts, what is "natural". As I understand why a judogi should be of unbleached cotton refers more to "wabi sabi" as a reminder, that beauty is not perfect and perfection can be boring and that nothing of beauty lasts. Last one is very (Zen) Buddhist (see dukkha). "White" is shining (wabi sabi is more hidden and modest) and for a purist maybe to perfect, symbolizing white attributes like beginning, purity and death. Simplicity is the key and thats what Daoism and Zen Buddhism are sharing too. There is a lot of critics in Laozi and Zhuangzi for not being simple, As an example for clothing, eating etc Laozi 53:NBK wrote: The term 'natural keikogi' apparently means one made from unbleached cotton (as cotton doesn't naturally assemble itself, other than to cling to other threads in a cotton boll.) Bleached cotton, growing up on a cotton farm and having owned a few dozen cotton keikogi, is bleached early in the manufacturing process.
Why is cotton bleached? I guess primarily for stylistic sensibilities, and early on, to compete against bright, new synthetic threads. But trust me, there's nothing natural about carded, pulled, steamed, combed etc cotton made into cotton thread, bleached or unbleached, other than the cotton itself.
The great Way (da Dao) is very smooth but people love bypaths.
The court is very well kept the fields are very weedy the granaries very empty.
Their clothes are fine and colourful on their belts are sharp swords,
they are filled with food and drink a superabundance of expensive goods.
This is robbers boasting, certainly not the Way.
Maybe ;-) But from my point of view I would critisize the desire of "imperfect perfection" - which is only seeking perfection on a next level. Beauty and pureness and exquisite can be very attractive and therefore expensive ... It's the same in China.Also, I think that Kano shihan would have balked at (that's my diplomatic side - from my undiplomatic side, how about 'puked all over'?) the notion of spending such extravagant funds on a keikogi just because it's made of bleached cotton? I need to recheck but I can't recall any of the numerous text I have with basic instructions to make a keikogi specifying ''unbleached cotton only'.