The title is a big boast, but it is the slogan of software program F.lux. F.lux is an application which adjusts the color temperature of your computer monitors based off of the time of day. Our monitors are designed with a daylight color temperature, however the majority of us rely on our computers outside of the daylight hours, and staring at daylight color temperature fixtures can negatively impact your sleep schedule. And we all don't get enough sleep as it is!
F.lux allows users to pick any color temperature between 2700 and 6500K on desktop for daytime and nighttime respectively, with markers for common sources. On iPhone users pick between a list of common light sources including candlelight, halogen, and fluorescent. F.lux takes care of the rest.
F.lux is very compatible with fluctuating schedules as well, for example, if you have a nocturnal working schedule (here's looking at you, Mouse!), you can set a daylight temperature for your nights, and an incandescent for day. Another way I find F.lux useful, is as an assistant lighting designer it is sometimes easiest to keep track of what is happening on the stage via computer. I set my monitor to a similar color temperature as the stage, so I can more accurately document the colors of different fixtures and cues.
The iPhone app hosts an interesting feature, "turn off for color sensitive work." So far, I have not noticed it take effect, having opened applications such as camera, photos, and Photoshop Express. However it does seem like an interesting feature which they plan to port to the desktop applications. For the time being, you can easily disable for an hour at a time on your desktop, if you are doing work where exact renderings of colors are vital. There seem to be many more exciting features in store for f.lux to allow for even more precise and intuitive control.
F.lux specifies in the installation directions, "Tell f.lux what kind of lighting you have, and where you live. Then forget about it." How very true. F.lux feels so natural, I often forget I have it running until someone opens their laptop at a tech table next to me, and I am blinded by the glaring, icy light.
F.lux is available on most Mac, Linux, and Windows OSes. If you have a jailbroken iPhone, you can also join the party via Cydia. Download here.