Simple, set-and-forget python application for changing between desktop themes according to light and dark hours. Right now, these desktop environments are supported natively: GNOME and other GNOME based or similar such as Unity, KDE Plasma, XFCE and Cinnamon. Additionally, wether your DE is listed above or not, you can also create and add your own scripts.
nice application for Linux/Gnome – no trades involved.
A simple trade-free application for Linux/Gnome