Colorball

Colorball is an Item Box obstacle that appears in Sonic Riders: Zero Gravity. When obtained, it temporarily obscures the rider's vision.

Description
In gameplay, when the player obtains Colorball, the playable character is surrounded by multi-colored paint in an attempt to distort the player's vision. These effects only last for a limited amount of time, however as the paint will slowly disappear.

The player can obtain Colorball at random by touching one of the Item Boxes that lie scattered across the racing course. When obtaining it, a small rectangular icon with rippling waves in the purple background appears briefly on-screen.