This might help you.

Ran across the information on a site...seems to make sense.

All GM of Canada divisions used the same paint codes.

For 1935-1954 passenger car colors,

the first digit is the last digit of the year

and the rest of the digits indicate the color combination.

For 1940 and 1950, the leading zero is dropped.

Here are the 1950 GM of Canada passenger colours with their Dupont numbers:


50=Black, 93-005
51=Brunswick Blue, 93-35857
52=Rideau Maroon, DU 116
53=Portland Grey, 93-54946
54=Wedgewood Green, 93-51252
55=Annapolis Green, 93-55492
56=Seafoam Green
57=Minerva Blue, 93-34893
59=Delmar Grey
60=Jasper Green Metallic
61=Sparton Grey Metallic
62=Aldershot Grey Metallic
63=Aspen Grey Metallic