Whole-screen color correction modifies all the screen colors on all windows.
Richard Hughes
richard@hughsie.com
松澤 二郎
jmatsuzawa@gnome.org 2011, 2012, 2013, 2014, 2015
赤星 柔充
yasumichi@vinelinux.org 2011, 2012
Kentaro KAZUHAMA
kazken3@gmail.com 2012
Shushi Kurose
md81bird@hitaki.net 2012
Noriko Mizumoto
noriko@fedoraproject.org 2013, 2014
坂本 貴史
o-takashi@sakamocchi.jp 2013, 2014
日本GNOMEユーザー会
http://www.gnome.gr.jp/ 2011, 2012

# Missing information for whole-screen color correction?

Unfortunately, many vendor-supplied ICC profiles do not include the information required for whole-screen color correction. These profiles can still be useful for applications that can do color compensation, but you will not see all the colors of your screen change.

In order to create a display profile, which includes both calibration and characterization data, you will need to use a special color measuring instruments called a colorimeter or a spectrometer.