> Does anyone know if someone is actually using metacity-theme-viewer?
> Currently it looks "broken". If it is unused or almost unused I am
> thinking about removing it rather than trying to fix it.
How is it broken? I think it does its job well (able to show how
decorations of various themes will look like).
Also, it is not intended for general users, but rather theme developers.
And +1 for Balló's suggestion. In my case, the situation is opposite
(I use dark theme for all Gtk 3 apps, but Gtk 2 apps have light theme
and dark decoration), but merging that code from mutter will make it
better for me as well.