And I really like BOTH--very different feel to each one.
If they were mine, though, I'd probably tone down the saturation of the green moss a little in the color version, and a little more in the B&W version. The toxic-nuclear-flow green, especially in the B&W just makes me focus on the moss, and for ME, that whole scene is just too splendid to want the whole thing to be about the green moss.