Dulux, not Deluxe. Dulux was a trademark name of Dupont.
The cars were essentially a Pullman Green color and by the late 40's the cars the lettering would have been 'Deluxe Gold', which is a yellow color, not gold as in 'gold leaf'. Champ used to make decals that would work pretty good for this car. I don't have the number for the decal set in front of me, but if no one else chimes in I can supply it when I get home.