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Set your screen colour temperature with F.lux

Add some extra warmth to your screen for a bit more late-night comfort.

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If you like to sit up late staring at a computer screen in the dark, or you live with people who do, then you may have noticed how strangely blue the glow of the screen seems to be.

What seems perfectly normal under general lighting suddenly looks cold and sterile. That's because computer screens not only have brightness, but they are also set to a certain colour temperature — and the standard temperature setting is full daylight. Daylight seems weird late at night, so if you'd prefer to bring your colour temperature down to something warmer there is a great little application called F.lux.

Set your preferred daytime and night-time colour temperature, and F.lux will watch the clock and adjust your screen to suit.

It's free, so grab it from http://stereopsis.com/flux/ and test it to see if a fireside vibe feels nicer at night than the cold, hard light of a tanning salon.