Yes. Light frequencies of colors are constants but how we see colors (color perception) is complex and variable. Our eyes and brains work together to provide our color perception. A remarkable example occurred several years ago when a photograph of a blue and black dress went viral online because some people perceived it as being colored white and gold. An important factor in that difference has to do with our brains adjusting how we "see" colors based on assumptions about lighting conditions. Unpainted wood is particularly tricky because it isn't a single, consistent color but shows various colors combined in patterns and changes depending on how rough it is and whether it is wet, dry, varnished, or oiled. Discussing the "actual color" of a deck isn't much help. For a model, the goal is for something that looks the way a real deck looks at some distance. When you look at a model of 1:100 scale that is 1 foot away, your brain perceives a real vessel 100 feet away and expects the colors, reflections, and textures to match that distance. If they don't, something looks off. So, we're largely left with "it should look right." Fair winds!