There are 4 themes you can choose from. They are all pretty lame.
1. Onyx (black that fades to a dark silver color)
2. Water (blue with overlapping shades of blue circles)
3. Butterfly (a butterfly flutters around the screen with leaevs poking out of the left side, mainly white with greal shades)
4. Fish (an aqua color with white bubbles and a gold fish that swims around)