Ozonation - The tonal range you see of the raw lacquer is the lighting (as photographers know
)....in some lights, it looks grey, or greenish or charcoal. Kind of like a chameleon more than a painted color. But yes, if I were to get a color out of your list, all sage green would be my choice. All white is really striking too.
For bags - The T bag would fit your camera gear, and your lunch and probably most of your tripod too if it's not raining (ballhead down of course). The T bag is huge with a roll top. I saw a T bag review where someone put all Star Trek seasons on DVD in it (old and new)...some ridiculously huge pile of DDVD boxes in it. With a C bag, it's messenger bag sized, so you wouldn't be able to fit everything...maybe just your lunch and stuff or just your camera gear, but prob not both.
Go for the Schwalb Marathons!
Excited to hear what you end up ordering!
And pics of course when you get it!