Painting color help

fred huss
 

I'm working on 2 resin kits and about ready to paint but, not sure what colors to use.
One model  is 53'6" 51101-51600 series Southern Flat,  the other is a B&O(ex BR&P) wood side gon which will be lettered for the B&O. 
I model early 1950s.  Thanks for your consideration. 
Fred Huss

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