> One super important feature I use every day is being able to invert a SINGLE window and not the entire screen While it's not per window inversion, for years

> One super important feature I use every day is being able to invert a SINGLE window and not the entire screen While it's not per window inversion, for years I've been using the tiny (100KB) and wondrous xcalib package for screen inversion* Should note that in order to get per screen inversion working I need to use Nvidia's Xinerama extension (without this extension inversion happens across all screens). * bound to alt-o/alt-i hotkeys with xbindkeys. Here's the .xbindkeysrc if anyone's interested. # invert screen 0 "xcalib -i -a -s 0" m:0x8 + c:32 # invert screen 1 "xcalib -i -a -s 1" m:0x8 + c:31