My research indicated that the molding was painted a complementary color as an option. Unfortunately, my laptop hard drive crashed and I lost all of my "Bookmarks" or "Favorites" to back that up. Keith Hardy's
Online Manuals site is a good place to start.
Jim Carter\'s catalog lists complementary colors available.
Brad\'s \'41 -\' 46 Chevys also has some great information including a page from the
1946 Commercial and Truck Colors Option No. 235 .
Hope this helps and let me know how you make out.