by Bobbin.Threadbare » Wed Oct 23, 2013 5:23 pm
I don't know that model, but if I had to guess I'd say it had a green hue because it was dyed with natural indigo. Natural indigo can give a 'green cast' or a 'red cast' depending on the method used, and it's a matter of some taste.
Kakishibu is a coating/dye made of unripe persimmon, yeah. "Wet strength" must mean water resistant, because that's what it is, and it's pretty amazing stuff. The problem with it is that it has a really odd odour, although I've found it dissipates over time.