In the book,
Durango Always a Railroad Town, there is an excellent color photo of the side of the loco. Don't know of any color photos showing the front.
This might help as well, although not the best of angles. It's a photo of an S scale model. The folks at P.B.L usually get their models and painting right so I assume this is pretty accurate...just wish there were more photos of it:
Matt
Lake Forest, CA
Click Here for my model train photo website