Photoshop post processing consisted of adjusting the white balance such that the illuminated deck had a cool tungsten feel, then convert the entire image to monochrome and then balancing the red/green/blue channels each to 33% intensity. Using my Wacom tablet and the history brush I carefully brought back the "color" to that one deck section.

Under the suggestion of John I recropped this image, removing a large portion of the dock area, thus moving the colored section to roughly 1/3 from the bottom.