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January 14, 2011 / Karthikeyan Natarajan

To invert screen colors

For Windows:
Whenever i use my laptop during midnight with all lights off, i will change the windows theme to “high  contrast mode” so that my text and background colors are inverted. But when i read a pdf which is a scanned copy of a document, the colors are not inverted because scanned copy is a single image. Windows won’t invert colors of image. As i told, it inverts text, window and background colors only.
I googled “invert screen colors” and got an application “PowerStrip”. Install this app, restart and run this app.
“Link: Download Powerstrip”
Steps to invert colors are
1.)  In tray, click on Powerstrip icon, select color profiles> configure.

2) check “enable color correction” , “Invert gamma ramp(negative image)”, “write directly to palette DAC”.
3) click apply and save settings as “inv”
Now all the screen colors should be inverted. when you open an image, it will look like negative. even you can watch films in negative colors.
whenever you want to restore to “normal mode” choose color profiles > Color defaults
If you want to invert whenever you want choose choose color profiles > inv
“Download Powerstrip here: link” (if download link does not work, click here)
This software has many interesting features too, see them here, link1, link2

For Linux:
          To invert colors in linux, install “compiz” and you can see invert screen colors in compiz settings manager. This works good in ubuntu. Compiz has a lot of features that are amazing. you can’t find these settings in any windows application. Even you can invert colors for specific window and all other windows will remain in non-inverted state. “Fire Effect” and “Rain effect” are really cool.
For installing Compiz in you ubuntu,  open Package manager and search for compiz and choos them to download and install.

For Mac OS X:
 I  found this application ” Black Light 1.7.1 to invert colors in Mac OS X. But, i never tested. (because i don’t have Mac OS X). 
Download link: Black Light 1.7.1 
Source link: See here for further details.



Leave a Comment
  1. m.nitin kumar / Jan 21 2011 12:09 pm

    nice one!!!!!

  2. Dean / Mar 14 2013 2:47 am

    I believe for later MAC OS X, you can simply press the Command+Alt+Ctrl+8 (or F8 instead of 8). Also, for the Linux, you can install the xcalib package. Instructions are at (yes, it is my post, and actually one of my most popular, too).

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