WGTniv: However, I have recommended changing it to just the same type of ball (regardless of color).
Thanks Niv, this would make more sense. I am on my last ball of one color, and have the exact same balls of another color waiting. It would be a welcomed addition to know that it would revert to the different colored but equal ball once one color runs out.
As it stands, I'll have to leave the last one all by its lonesome in my bag and switch to the other color in order to prevent getting stuck with the starters in the middle of a round.
EDIT: I'd like to also recommend a display of the current 'life' left for the current ball in the equipment setup page. It would be helpful to know when to make the changes before setting up a round. This could really be applied only when down to the last ball, but it might be easier to display it all of the time instead of programming it to turn on or off based on number of balls left.