Many people think of color as the property of an object, but color really is a characteristic of visible light, part of the electromagnetic spectrum, as perceived by the eye and brain.
We all, meaning man and beast, see color differently, and some of us don't see color at all, or we see only certain colors. Perception is the heart of the matter. I see a red apple, and perhaps you do too, but we should keep in mind that this apple isn't really red. It just as easily could be seen as blue, or another color. The personal nature of color perception might explain some of those color decisions that otherwise are difficult to appreciate!