For the sake of your eyesight, please do the next configuration to your computer:
Right click on desktop—properties—appearance—advanced—item select (Window), Color 1 (L) select (Other), change tonality 85, saturation 123, brightness 205—add to customized color—select on customized color—click OK. Then all documents are not of dazzling black and white, but very soft green, which is suggested by ophthalmologist. If you use it for a long time, it could ease eyestrain effective and protect your eyes.