Fred, it seems Mobil used the US flag colours for their logo.
That may make it lot easier to match.
https://www.logaster.com/blog/exxonmobil-logo/ Extract:
The colors of this logo are red, white and blue. These colors, the three colors of the U.S. flag, served to show Standard Oil’s patriotism.Assuming they were an exact match (& assuming Mobil was permitted to use them at the time) the codes below may mean something to a paint shop.
https://www.pantone.com/pages/myp_mypantone/myppalettedetail.aspx?p_id=75&p_type=p_detailOld Glory Red, Color Association of the United States, Inc. Cable No. 70180, PMS (Pantone Matching System) PANTONE® 193C (coated);
White, Color Association of the United States, Inc. Cable No. 70001;
Old Glory Blue, Color Association of the United States, Inc. Cable No. 70075, PMS (Pantone Matching System) PANTONE® 281C (coated) A professional auto paint shop should be able to match a logo on an official Mobil product.
Your restoration idea sounds interesting. Would love to see the end result.
Dave