Prelim: Notebook page background styles

themes/gtk-3.0-base/common/notebook.scss

@@ -361,6 +361,13 @@ notebook
         }
     }
 
+    // Notebook page background (taken from Adwaita)
+    //
+    > stack:not(:only-child)
+    { 
+        @include __wintc_apply_props($notebook_page_styles);
+    }
+
     // Some default Adwaita stuff
     //
     > header
@@ -468,11 +475,4 @@ notebook
             }
         }
     }
-
-    // The :not(:only-child) is for "hidden" notebooks
-    //
-    > stack:not(:only-child)
-    { 
-        background-color: $base_color;
-    }
 }

themes/gtk-3.0-base/init/notebook.scss

@@ -52,6 +52,8 @@ $notebook_tab_top_selected_hover_styles: ();
 //
 $notebook_styles: ();
 
+$notebook_page_styles: ();
+
 $notebook_frame_header_styles: ();
 
 $notebook_frame_header_bottom_styles: ();

themes/luna/blue/gtk-3.0/styling/notebook.scss

@@ -177,3 +177,14 @@ $notebook_styles:
         undefined,
         default
     );
+
+$notebook_page_styles:
+    wintc_define_props_bg(
+        $notebook_page_styles,
+        false,
+        undefined,
+        undefined,
+        undefined,
+        undefined,
+        linear-gradient(180deg, rgba(252,252,254,1) 0%, rgba(244,243,238,1) 100%)
+    );

themes/professional/gtk-3.0/styling/notebook.scss

@@ -223,3 +223,14 @@ $notebook_styles:
         undefined,
         default
     );
+
+$notebook_page_styles:
+    wintc_define_props_bg(
+        $notebook_page_styles,
+        false,
+        #F3F3EF,
+        undefined,
+        undefined,
+        undefined,
+        undefined
+    );