Here is another photo showing a slightly different rail treatment. On this one, rail brown was used, and Paul elected to leave the center rail black.
Here is another shot on my engine terminal modules. I wanted something I could do with minimal effort, so these were simply shot with Floquil grimy black, which is what I do on my HO railroad.
At the end of the day, I don't think it matters what shade the track / rail is painted, the object is to get rid of the shiny rail. My object was always to get the viewer to focus on the motive power and equipment, and lose sight of the fact of that pesky center rail in the photo. 
Regards,
Jerry
