An easy way to enhance the look of any diesel locomotive is to blacken the grills and vents to provide more depth.  You can use a black wash to bring out the grill or vent details.  Weathering powders are extremely effective bringing out locomotive vent and grill details.

Micro-Trains 2 Story Barracks Build by Modelersguild.com

These Micro Trains kits are nice, real nice. A few nights build time and you have a piece for [ ... ]

Hopper Weathering Clinic III
By Bill Mock
January 2010

OK, I gave the inside of these hoppers a wash of Engine Black below the coal line. They [ ... ]

Found a new resource for windows,doors,buildings,and cars/trucks ect.It's called micronart. You can find them on the web at www.micronart.com they can definetly [ ... ]