If you want a pink ball top for one of Andy's sticks then you can just pick up a Japanese one (either Sanwa or Seimitsu) they're a direct fit (IIRC Sanwa is what Andy stocks, though in limited colors, no pink). Check the sellers in the the trading forum, can't remember if ponyboy stocks them, but eBay will nab you a couple easy otherwise, pink is a popular color for those.
For the 360 you just swap the tops, the balls are threaded on.