Big Paint Star

The Big Paint Star is the source of color that appears in Paper Mario: Color Splash. There are six of them in the game and each one is in a different color: red, orange, yellow, green, blue, and purple. Each one is guarded by a Koopaling (except for Roy). Collecting all six restores color to Prisma Fountain and allows Mario and Huey to go to Rainbow Road to face Bowser at Black Bowser's Castle.

Trivia

 * The Big Paint Star resembles the Grand Star from Super Mario Galaxy.