Those of us who play 3-cushion know that there are 6 red dots on both the yellow and white balls. (Aramith Pro Cup). I would like to know why those red dots are there? Is it mainly for visual or do the balls roll differently from a normal set of carom ball without the dots (Aramith Deluxe for example). I can't seem to find the answer for my question anywhere on the web...THANK YOU IN ADVANCE!