I'm a fan.
The grey trees and green sky help create a surreal atmosphere.
The image is consistent in its simplicity, except that the sky has a smooth gradient instead of stepped tones like everything else. I don't think this would normally bother me, but the way the gradient "interacts" with the similarly-colored clouds causes a strange effect that breaks the mellowness of the image. I may be the only human who feels this way, though. Grin.