Also the rules in life/business apply sometimes, if it costs money then they aren't gonna do it. So why pay all that money to repaint a MOW loco shiny gray or orange? As Pete said, re-stencil it instead.
Last rule also, it's YOUR RR so do what you want to, chances are it already happened on the prototype somewhere.
Keep us posted on your progress Chuck. pictures too if you're able too.
MOW-less dave