You might need to mix the proper french gray from several different colors. Most old time pinstriper's I know mix the correct color on their pallet. My guess would be grey + a dab of blue
I had to make up "straw" for my tudor, and I purchased yellow, white and tan from 1-Shot. It took me maybe 10 minutes to get what I liked that matched a chip I had. Make a little bit to get the approximate proportions, then mix a larger amount to provide what you need to stripe the car.
FWIW... the grill insert on a '32 Ford is French Gray. There may be a color you can buy or match
John, You can also consider 3M pinstriping tape. It comes in several widths and colors. I don't know if they have one close to what you want but I found one that matched Tacoma Crème that I used on my coupe.
John, Even if you did it in BATTLESHIP GREY, who??? would notice? If they did, who cares. Vermin has straw wheels, I'll put a 1/8" dark blue body COLOR stripe on the wheel rims, to "tie" them to the body color! (IT'S MY CAR!) Bill Ownman