[gtk-osx-devel] Themes and gtk+-3.0

[Jim Charlton <charltn gmail com>]

I have been struggling with editing/changing themes on GTK-OSX.

On linux Ubuntu), using libgtkmm-3.0-dev, compiled programs can have 
their themes changed with Tweak Tool.  Having chosen the Ambiance theme, 
I can edit /usr/share/themes/Ambiance/gtk-3.0/gtk.css to "@import 
url("gtk-main.css");" and then edit 
/usr/share/themes/Ambiance/gtk-3.0/gtk-main.css to customize the theme.

On MAC OSX using what appears to be the same gtkmm-3.0 libraries, I 
cannot figure out how to change themes.  Neither can I figure out how to 
edit the default Adwaita theme so that changes appear in the program.  
Nothing I do seems to make any difference to the theme.

If the theme was compiled into a gresource, I don't seem to be able to 
find it.

Can someone give me a clue.  I really do not like the default theme that 
I get.  Previous versions of the gtk+ libraries (on the MAC) had a theme 
that was more pleasing to my eye.

jim...   Jim Charlton