I think that's the only fictional livery that's named after one of the locations in game, Oak Valley, which seriously lacks in oak trees at times.

Finally, a closeup of the water tower, coal tipple, and the best closeup I could find of the Diesel Switcher (An SW1500).

Finishing off the Rolling Stock, the flatcar, the tank car, and the caboose.

Now, the open-top cars, the gondola and hopper cars, also painted in the same orange with black dividing stripe livery.

The house cars, all painted in the same orange livery. The boxcar, the stock car, and refrigerator car.

There were definitely not enough sprites to make a complete landscape, and the floor tiles are pretty ugly IMHO. Still, a interesting look into what might've been.