Here is a render of a steam locomotive. The model is from turbosquid.com, the tracks are from sharech.com. I assembled the scene in Poser abd exported it with my Python script. The tracks segment was fairly short, so there are actually 3 instances of the tracks in the scene, displaced in the x direction. Illumination is from an hdr lat/long environment. I did the sepia toning using hdr tools from http://ttic.uchicago.edu/~cotter/projects/hdr_tools/. The adjust tool allows setting different gammas for the rgb channels. I desaturated the render in hdrshop, then ran it through the adjust tool with higher contrast gamma settings on the green and blue channels.