Being a model railroader as well as ship modeler, one must consider several factors in paint selection and final appearance.
First is the what and when are you modeling, as in fresh dried paint in port after new paint was completed, or a ship that has been at sea for months or years after getting last fresh paint. Sun, wind and water will all effect the look of paint on a ship, train or any other items left out to mother nature.
Is is a glossy finish, or dull weather worn color, regardless of what color that is.
As paint ages, black fade to lighter shades almost grey in some cases, and red fade to lighter shades or light pink, who knows what yellow changes to after some time.
Just look at what happens to the color of copper as a ship sales in the salt water after being plated over the planking.
