This is the most usefull trick who are investing there lot of time on PC work.
F.Lux is a free piece of desktop software that runs on Windows, Mac and Linux (and iOS too).
What it claims to do is make your “computer screen look like the room you’re in“,
making your screen seem as if it blends in with the room.
This is
especially useful if you find looking at a constantly bright monitor in
the shy hours of the morning to be uncomfortable.
It’s really simple to set up and from what I can see it does what it
says.
All you need to do is run and install Flux, adjust your location
(if it does not pick up automatically for sunrise/set) and then set your
interior lighting style (e.g. halogen, fluorescent) for color
accuracy.
Flux will do the rest, leave it running and as the outside
brightness changes the color of your monitor will too; creating an
automatic brightness adjusting effect.
Flux also includes a bypass mode in case you are up to ‘color sensitive work’.
TRICKSFUNN 
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