Puzzle Bobble 4

On the planet Bubbleluna lives the twins Bub and Bob. One day, the sun fails to rise because the Fairy of the Night, Cleon, has stolen the light source known as the Rainbow for Full-Moon Madame Luna. She splits this rainbow into 7 light bubbles. Bub and Bob then set off to retrieve these bubbles and restore the light and peace to their planet. (wiki)