Materia is a Material Design theme for GNOME and GTK-based desktop environments.
The theme solves the problem of applying a cohesive Material Design aesthetic across fragmented Linux desktop ecosystems by providing unified styling for multiple toolkits and desktop environments. It works by delivering theme files compatible with GTK 2, GTK 3, and GTK 4, along with support for shell environments including GNOME Shell, Budgie, Cinnamon, MATE, Unity, and Xfce. The theme includes ripple animations for GTK 3 and 4, and offers three color variants (standard, dark, and light) combined with two size variants (standard and compact).
Materia suits users who want Material Design consistency across a GTK-based desktop without manual configuration. It is available through distro packages for Arch Linux, Debian, Fedora, Solus, and Ubuntu, as well as through Flatpak, making installation straightforward on major distributions. The theme also extends to Chrome via installable extensions and supports customization of the GDM login screen. Users should note that elementary apps are unsupported due to their own stylesheet, and downstream-customized GNOME sessions like Ubuntu's may require switching to the standard GNOME session for proper theming. The README recommends using fonts with a Medium weight such as Roboto and setting font sizes to specific values for optimal appearance.
Development activity shows consistent maintenance with regular updates addressing compatibility across evolving GTK versions. The project maintains documentation for installation, GDM theming, and manual setup, indicating attention to user guidance. Support for multiple desktop environments and toolkit versions demonstrates ongoing effort to keep the theme functional as the Linux desktop ecosystem evolves.
