If you are like me who like to work at the wee hours (just because sometimes you just get those cranky workarounds and logic just about that time 😉 ) you may have noticed that the screen brightness of your laptop is too bright and painful. f.lux is a freeware application which when installed adjusts your monitor brightness and colour warmth according to the current time of the system.
Give it a go at http://www.stereopsis.com/flux/