How to use JavaScript to measure how bright a users monitor is ?

Posted by HankV on Stack Overflow See other posts from Stack Overflow or by HankV
Published on 2010-05-21T15:02:33Z Indexed on 2010/05/21 15:10 UTC
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JavaScript

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monitor

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display

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brightness

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contrast

I've noticed that the brightness of computer monitors drastically varies between computers.

As such, this changes the look of web pages greatly.

Is there a way to use JavaScript to automatically detect how bright (or dark) a users monitor is so that I can adjust my web page colors accordingly?

UPDATE

Please note that I do not want manual user involvement. I want this detection to be automatic so that users don't realize I dynamically change the color palette automatically based on the brightness/darkness of their monitor.

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