That sounds about right. I have the swatch in front of me and it's a kinda milk-chocolatey brown. Definitely lighter than the Dundee's "bitter chocolate" (I know some thought it was the same material - it's not), and more of a red-brown than a green-brown (if that makes sense).
I think this pic is pretty accurate (it's under studio light). I'll see if I can find more as well.
We don't have an app (someday I bet we will, but I won't pretend to know the answer to that), but our site is responsive so that it should make for a pretty good mobile experience. A huge percentage of our purchases are via mobile, in fact.