Of all the styles shown, I think I like that of Telrith the best, followed by your second version of Forests and mountains. Telrith wins out for me both because of the nice subtle contrast between light & dark, and because all of the features of the map seem to be well integrated. Your second version of mountains and trees looks nice, but it seems a bit more busy. Perhaps if you had a bit less forest texture (aka canopy tops) it might be a bit less distracting. Overall though, I'd say this looks rather promising. Looking forward to seeing updates.