Dave, Here's some photos of the cars in process. (3) Weaver BAR 40 foot boxcars. I had already done 4 of them from Atlas O, then found a forum member last year who had a set of 3 nice Ultra Line Weavers so I bought all 3 of those. Then (2) Atlas O 70 ton covered NYC Hopper , and (1) Weaver Lackawanna Flat Car. Kind of forgot my weathering sequence on trucks, I need to go back and document it like I have been doing with other weathering projects. Memory apparently isn't good enough anymore to remember all the weathering steps, paint colors and products used and in which order. Keeping a file with all that information on my PC has worked really well for getting "repeatable" results.
Decided to take all the Union Station windows out, remove the glass, wash them and paint them. I am pretty pleased with the medium Green color I chose. Here's some photos