Wizball

In Wizball the player takes the role of the friendly wizard Wiz who can turn himself into a green ball that is able to defend his world against the color-sucking enemies who have turned his once brightly colored Wizworld into a drab planet. With his trusty feline companion Catelite, the wizard will restore the colors to the world by retrieving them from defeated enemies. There are eight levels to be completed. (mobygames.com)