I just finished painting these brass O scale boxcars for a client. The cars are from Protocraft and are quite wonderful to behold. There are 15 variations that represent 25 different road names. Protocraft has also developed decals to properly finish these models.
The SSW car was weathered with chalks and air brushing and the CNW car was weathered using oils and air brush.
The car colours were mixed using the chart from an RP Cyc article written by Pat Wider. Vol 3. I've copied the chart and nailed to the wall in the paint room.