Yes, it's a Photoshopped version of the photo I posted. The colors are the same, I just cropped it down till it was the right proportions, then moved the moon down so it was "in frame." Oh, and flipped the mountains so that the moon could be on the right and be in a good place relative to the mountains. It is, however, the same size as in the original photo, even though it looks gigantic closer to the mountains.
I fiddled around with changing the colors to something that matches the header, but they all looked hideously garish and there were a couple areas that stayed stubbornly green. So I left it as it was.