By John Paterek Question I own a '65 356C coupe. The previous owner had the Ruby Red color tinted darker than original . Response Paint match problems are on the rise now that the EPA has removed lead from most primary colors.
Reds are in that category.
They also turn darker or more purple with age and ultraviolet exposure. Du Pont Paints now has a Chroma vision camera . It is a hand held device that shoots three pictures of your color and then feeds the data to Dupont's color library. A formula in chroma base color is produced. I have had 10 to 12 successful matches using this process.