Hi Jonathan and thanks for the details you've provided. Your suggestion for mixing brands to obtain some non-powered B units seems a good one. But now we'd have to convince Atlas to paint some Santa Fe B's in yellow..
Perhaps you guys could order some undecorated B's from them and paint then to match what you are offering?
Interesting concept. Let me run that up the tree. I don't know if that would pencil out or not? It is interesting also to note that I've seen photos of Yellowbonnet As with Warbonnet Bs, Bluebonnet Bs, and Yellowbonnet Bs all in the same consist pulling Amtrak trains. Another option would be to see if Weaver could paint some undecorated ones as well to match.