This was edited using the "Man From Mars" technique as described by Dan Marguilis. It involves converting the RGB file into Lab color space, then doing some cool things with curves to drive the colors apart. Notice how much greener the greens are, and the field appears a little more orangeish-red. To generate this rendition of the foreground took literally 90 seconds. The sky was masked at darkened in the Lab color space as well, and took about 5 minutes to do. The same highlighting techniqu and vignette was applied as in the previous version.