A little more organization, separating into theme fixes that must be applied to correct rendering, and theme styling changes that may or may not be desired. Still needs config option.

terminatorlib/terminator.py

@@ -415,13 +415,17 @@ class Terminator(Borg):
 
         settings=Gtk.Settings().get_default()
         theme_name = settings.get_property('gtk-theme_name')
+
+        theme_part_list = ['terminator.css']
+        if 1:    # checkbox_style - needs adding to prefs
+            theme_part_list.append('terminator_styling.css')
+        for theme_part_file in theme_part_list:
             for theme_dir in [usr_theme_dir, app_theme_dir]:
                 path_to_theme_specific_css = os.path.join(theme_dir,
                                                           theme_name,
                                                           'gtk-3.0/apps',
-                                                      'terminator.css')
+                                                          theme_part_file)
                 if os.path.isfile(path_to_theme_specific_css):
-                print path_to_theme_specific_css, os.path.isfile(path_to_theme_specific_css)
                     style_provider = Gtk.CssProvider()
                     style_provider.load_from_path(path_to_theme_specific_css)
                     self.style_providers.append(style_provider)

terminatorlib/themes/Adwaita/gtk-3.0/apps/terminator.css

@@ -1,4 +1,5 @@
-GtkPaned {
+/* Fixes oversized hover area preventing selecting characters. */
+.terminator-terminal-window GtkPaned {
     margin: 0 0 0 0;
     padding: 0 0 0 0; }
 

terminatorlib/themes/Raleigh/gtk-3.0/apps/terminator.css

@@ -1,3 +1,4 @@
+/* Raleigh is so old, it doesn't use the correct public colours */
 .terminator-terminal-window {
     background-color: alpha(@bg_color,0); }