If companies (kinda like the vis-a-ball idea) could let you design a pattern for the outside of the ball (or a colour combination) what would you like to see?? Personally ide go with a yellow and red ball, or a yellow and black ball... or ide go with a pitch black ball with huge yellow logos on it...I like colourful balls, not cause they look good, but cause i can see when the ball is revving up... makes it a bit easier to read the balls reaction shape.
good luck and high scoring
matt