If you want to change the color of your Pinata, use the Knups of plants. If you 
use the right plant Knups on a Pinata, it will change the color. For example, a 
Blue Bell to a Shellybean will change the color to blue. You can also make other 
species of Pinatas. For example, give your Sparromint a Buttercup Knup and it 
will change  into a Candarie.