Thoses plugins must be copied inside KiCad's python plugins directory (~/.kicad_plugins or /usr/share/kicad/scripting/plugins/ for Linux). Most of them use python ...
If you run KiCad 5.99 which was build including the new Plugin and Content Manager (using the compile option -DKICAD_PCM=ON), you can simply add the repository url and install the themes inside KiCad: ...
Some results have been hidden because they may be inaccessible to you
Show inaccessible results
Feedback