Color Board

This app is pretty simple but useful, you can specify a color and make it a full screen light. You don't have to worry about accidentally touching something, cause only the real buttons can do something.

With your imagination, Color Board can make many things easy. For example, you can use it as a reversal film viewer(it provides standard color temperature light), a soft light source(like reading light, the flash light is too sharp and uncomfortable), an indicator and many others. It's also an energy saver, you can get more longer battery life than use your camera flash light.