Lay out a large sheet of parchment paper over a baking sheet and set aside.
Melt the white chocolate over a double boiler, then transfer to a separate bowl. Melt the blue white chocolate and place in another bowl. Do the same with the pink white chocolate.
Spread the white chocolate over the parchment paper so that it is one even layer that is just a little thicker than ¼" thick.
Dollop the blue and pink white chocolate all over the white chocolate randomly.
Use a knife to swirl the the chocolate into a nice pattern.
Quickly top your white chocolate bark with sprinkles. Set aside the bark to harden for about an hour under a fan, or for about 15 minutes in the refrigerator.
Take a knife to cut the bark into single servings.
Notes
*I purchased the colored white chocolate wafers at the craft store.