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.
UPDATE 2
Please also note that I'm not talking about wanting to adjust/calibrate the end users actual monitor but instead, programatically adjust the color selected to be displayed on the web-page itself. Meaning, if the end user has a darker than normal (brightness) display, I'll instead display a version of my web page that uses brighter colors instead.