Just a quick post about this picture.
I was experimenting with the concept I've been using for converting black and white images, but without converting them to black and white. I went to channels and selected a color channel, then CTRL-clicked the thumbnail, then selected the inverse. I then went back to the layers tab and added an adjustment layer - selecting solid color, black. This created a really nice effect I thought. I also played with curves of course, and I altered the saturation of the image one color at a time.