This library uses react-css-vars. Look at it's section about how it works. If you want something else than a simple toggle button for your theme (or more than a light and a dark theme) I suggest using ...

Pull down changes from the theme editor: shopify theme pull -d. Anytime you add a Tailwind CSS class (remember to prefix it with twcss-), run the CLI tool to scan your template files for classes and ...

Yaru is both a GTK and GNOME Shell theme based on the GNOME Adwaita GTK theme and vanilla GNOME Shell css. Included to update the look and feel of the Ubuntu desktop. The theme combines elements of ...