Paint color Questions

[nsc39d8]

So I am beginning several project and would like some paint color suggestions.

First is a B&LE boxcar as seen here:

www.rr-fallenflags.org/ble/ble82516jpa.jpg

Next is a RF&P boxcar close to this:

www.rr-fallenflags.org/rfp/rfp2344akg.jpg

Thanks in advance.