How do I invert screen colors by value?
The most common way to invert colors is to use RGB-negation. Unfortunately, it's not very beautiful: blue becomes yellow, green becomes magenta, etc.
What I want is to invert value
, one of the components among hue
and saturation
. This way, dark colors will become light, light become dark, but blue remains blue-ish anyway.
Example output (created with GIMP, doesn't work on the whole screen):
The goal is to have the entire screen "inverted", so you can read PDF-s, firefox, instant messaging -- all in dark colors.