In visual perception a color is almost never seen as it really is—as it physically is. This fact makes color the most relative medium in art.
You don’t get exhibited in the Guggenheim, as Josef Albers did, unless you know a little about color. But you don’t have to know as much as Albers, who literally made a career out of painting the same squares different colors. To experience the capriciousness of color, all you have to do is twiddle with the controls for your computer monitor.
Turn off all the lights in the room, and call up the screen that lets you adjust brightness, contrast, ...