And forget any film based on chemicals.
Ya can't trust digital photo's, either. Color can vary depending on the screen. Photo's on my desktop monitor will look slight different than photos on my laptops. And it will vary between the two laptops, also.
Plus, colors will look different under different lighting conditions...
Here's an interesting tidbit: According to Chicago, Burlington and Quincy painting diagrams, their F-units were painted "aluminum."
The model companies in the 50' through the 70's took that to be a silver paint. Wrong... It's more of a grayish-white and depending on the lighting, it can almost take on a beige hue.