I'm using the gnome flashback session with metacity window manager, but I can't change to any metacity theme in any of the tweaking tools, as they're not even appearing in the lists. Is there anything I can do?


You can use GSettings to change theme:
gsettings set org.gnome.metacity theme THEME_NAME

Above will work with Metacity 3.16.x and 3.18.x, but starting with 3.20 Metacity by default will use GTK+ theme. To use Metacity themes you will need to change two settings:
- gsettings set org.gnome.metacity.theme type metacity
- gsettings set org.gnome.metacity.theme name THEME_NAME

Available types are metacity and gtk. When using gtk type Metacity will ignore THEME_NAME and will use GTK+ theme.

  • Using the Human theme, this worked for most of my applications. But nautilus and gnome-tweak-tool for example still show the old theme. – jpmath Aug 23 '16 at 15:38
  • @jpmath Client side decorated windows does not use metacity theme, you need to change GTK+ theme - gsettings set org.gnome.desktop.interface gtk-theme THEME_NAME – muktupavels Aug 23 '16 at 18:34

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