Thanks everyone - I ended up grabbing it shortly after my post (thanks Alex and AJ!).
The color is hard to grab in photos - IMO, I'd say it's a medium khaki with some olive and gold elements to it. The pictures on Withered Fig are definitely much lighter than in person. I took a quick photo next to my new olive serge workshirt and olive moleskin CPO (I tried to diversify out of indigo this season).
Hope this helps - the brown looks great in person! Now time to wear the hell out of all of these…