Sure this is a novelty app, but thought it was actually pretty cool. Mobile Light Kit offers a simple menu interface that leads to animated images and a couple of solid color screens. The app is ad supported but they are only on the main page and not integrated throughout the site.
Listed below are just a few of the overall 11 different choices available.
Details: This app gives you a list of various types of fun lights to choose from.
Anything from a basic bright white screen to use as a flashlight, to roaring fireplace.
There are 11 different lights to choose from.