Happy to help!
I have never seen vert foncé in person (my google search is worthless -
so many crazy variants that bear no resemblance to each other!) so I can't comment on VC's relation to VF.
I feel my bag does indeed look quite similar to
@HKsai's full body photo

My VC is green and dark but I suspect VC may be
less evergreen/pine toned than you want? It's not blue by any stretch (which many photos make it look) but the green certainly has a blue/cyan rather than yellow undertone. It is a rich color, but I think the perfect word for it is muted... it's not vibrant, it's elegant and understated, it'd doesn't "scream" green, but when worn with black it's obviously green if that makes sense? I would love it even more if it had more of an emerald-y tone like H.com makes it look... I just don't think that's the personality of VC. You'd have to be ok with the muted-ness of it.