Nord theme for CairoShell
Adapté du theme Flat de CairoShell
https://github.com/cairoshell/cairoshell/blob/master/Cairo%20Desktop/Cairo%20Desktop/Themes/Flat.xaml
Windows ico:
https://www.iconsdb.com/white-icons/os-windows-icon.html
Documentation:
https://github.com/cairoshell/cairoshell/wiki/Creating-Themes
A installer dans le dossier %LOCALAPPDATA%\Cairo_Development_Team\Themes
