Features:

✓ Fullscreen mode: the entire screen turns white (or any other color)
✓ Can be used as a lamp or a flashlight
✓ Can be used as a light source for night photography
✓ Can be used to test the display matrix find damaged pixels
✓ Can be used as a night light with randomly changing colors ("color show")
✓ Maximum brightness: the screen brightness stays at 100%
✓ The screen stays turned on until you leave the app
✓ Use the RGB selector to select any color