Here's an idea for a 3rd party app. It would probably only be useful for about .01% of iPhone users, but it would certainly help me out. When I use my iPhone in the dark, outdoors at night, or something similar, it's way too bright and destroys my ability to see in the dark for several minutes after. My idea is for an app that will temporarily switch the iPhone display to be monochromatic red and reduce the brightness significantly. While it would be ideal for the whole interface to get the treatment, changing just the "slide to unlock" splashscreen would be a good start to allow checking the time. Having to turn on the iPhone in regular mode to activate night mode would defeat the purpose, so perhaps it could be triggered by the vibrate switch, or simply by the ambient light sensor. Anybody think such a thing is possible?