The ones currently still sold on the website are the golden brown ones. The darker brown ones have been discontinued.
As far as cleaning, what i do is wipe the uppers down with a damp cloth once or twice, and then let them dry. They I apply 1 or 2 coats of neatsfoot oil. It will slightly darken the shoes temporarily, but it helps the leather stay soft and oily; plus it helps hide scuffs and marks. Then, on the soles, the trick is to get a Mr. Clean magic eraser and go to town. They will literally go from a yellow/off-white to a brand new bleach white color. It really is impressive.
Also, I put shoe trees in mine when I am not wearing them.
Hope that is helpful!
Thanks for that! The Magic Eraser is a great idea! I asked here about shoe-trees last year, and was told they didn't do much in a non-welted shoe, so I didn't bother. I'll get a couple more pairs of trees.