Colorize the entire gnome workspace. Amber, green, cyan, sepia and grayscale - just keep clicking extension icon. Scroll over extension icon to change fx level.
Note: Binary files aren't shown on the web site. To see all files, please download the extension zipfile.
You cannot create objects and connect signals in init(): https://wiki.gnome.org/Projects/GnomeShell/Extensions/Review#Only_use_.60init.28.29.60_for_initialization move everything from init() to enable(). If you need any help with your extension you can ask us on: GNOME Matrix channel: https://matrix.to/#/#extensions:gnome.org IRC Bridge: irc://irc.gimpnet.org/shell-extensions