I know that Floquil paints were used a lot on the props, such as boxcar red, but I've found that Floquil is no more, Testors bought them out. If anyone has a list of paints that match well I would really appreciate it if they could share it with me.
Vallejo paints have railroad colors so should be a good match Vallejo Paints
MicroLux Paints
There was just a paint type guide in the most recent model railroader magazine, and yes, those Microlux paints from Vallejo are supposed to be color matched to the old Floquil colors. They supposedly are exclusive to MicroMark so thats the only place to get them from.