Where to purchase paint for prewar AF tin plate trains & color chart

I’am trying to find paint and a color chart for American Flyer prewar O gauge trains. I am new to restoring Prewar trains, I have the locomotive (Type VIII) ready for new paint but need help on the freight cars and caboose. Thanks in advance for any help. Jim C.

When I am trying to match paint I go to the paint department and find the cloest chip then carry the chip and check different stores. I’ve have pretty good luck matching the paint with off the shelf spray cans.

Jim