This is a gruvbox color scheme for khal which makes use of the new plugin system. At the moment of this writing (2024-04-29), the plugin system has not made it into the latest release of khal, so you will have to install from khal's master branch.
Install the python project in this repository, e.g.
pip install git+https://github.com/geier/khal_gruvbox@importliband add the following to your khal configuration file (usually ~/.config/khal/khal.conf):
[view]
theme = gruvbox
