How Do Basket Balls Get Tour Color?

There's probably about 50 basket balls that are available to the players who are practising. Most basket balls are orange, and the nba basket ball is kind of all orange,. And what's going on with all the colors? Ah, it's actually a really interesting story. So when you see that orange and oatmeal ball, you know that you're watching a w mba game. All the basket balls, no matter what size they are or what their colors are, have these black lines on them. Why do basketballs have lines on them?