According to Crackberry, BlackBerry app Night Sky v1.0 is for the BlackBerry Curve 8900 and the BlackBerry Bold 9000 and features a view of the city lights at night time along with six icons in ghost effect.
Night Sky v1.0 has features such as the moon is a battery meter so when the handset is fully charged you see a full moon, when low charge a crescent moon is depicted. The City light signifies handset signal so the stronger the signal the brighter the light.
The 6 ghost effect icons at the bottom are customisable by arranging the application on the app screen. Night Sky v1.0 for BlackBerry is available from Crackberry for $6.99.