Call or go see an automotive paint store (Sherwin Williams, Dupont, etc).
They can look them up and make the paint if the codes are not obsolete (mine were). Otherwise, they want to use their paint gun computer to read the paint, but you have to bring the motorhome down there, or a painted part, if it is removable. I found my paint codes for my 2012 Fleetwood by googling them and came up with a company online who made me touch up paints which arrived a few days later.
Revolution LE 38X C9 Cat
2011 Scion TC toad
1985 KLR 600 as a backup...