That just looks strange to my eye. But then I'm from the Great Plains, which has more trees now than it ever did before industrialization. Oddly, though, they all grow in straight lines...

I prefer the color version as well. The amount of noise in the b/w one is distracting. As Ravs said, though, that one does look better zoomed out.

The rivers look a bit artificial. There is plenty of jiggle in the coastlines and lake borders, not to mention the roughness in the terrain itself. The rivers are very smooth, though. I don't have the technical knowledge to suggest a solution to that, unfortunately.