I like the recolor, looks good, I think you should make a background for it with the same color hills as the actual mountains. This really is a good recolor though, good job!
I don't really like these colors too much. Where would you find green rocks, anyway? If I absolutely had to use these, it would be in a water level. You tried, though, and I can't deny that.
Actually now that I look at it the bushes are a pretty nice shade of green, but everything else is sort of iffy in my eyes.