Hmmm, that would possibly indicate a greater depth of the hardening. Possibly a higher temperature and/or a longer length of time. Medium manipulation would affect the colors, and shielding could produce a more even distribution of the color..All at the control of the "Meister" at the Crescent plant. Too bad there's little documentation of the actual processes left..

I prefer wood to plastic, leather to nylon, waxed cotton to Gore-Tex, and split bamboo to graphite.