I talked to an Optometrist friend of mine about the coloration on cloth and whether blue is better for visualization of objects (pool balls) or not. He gave me an interesting answer. Your eye acuity reacts less well to blue than to green. This is because of evolution. Man has been visualizing green and all shades thereof since the beginning of time. Mans eye is programed to visualize objects against a green background better that any other color. Other that the sky, blue does not appear enough in nature to pre program the eye genetically so as it to be easier to distinguish objects. It's also easier on the eye in terms of stress on focus. Now having said this, computer screens use a blue background with black lettering (for the most part) but that wasn't always the case. Early computers use a black background with white lettering. I would like our computer experts to chime in here and provide their take on this theory.
