improve kibela color

packages/app/src/styles/theme/kibela.scss

@@ -109,4 +109,22 @@ html[dark] {
       @include btn-page-editor-mode-manager(darken($primary, 15%), lighten($primary, 45%), lighten($primary, 50%));
     }
   }
+
+  /*
+ * GROWI Sidebar
+ */
+  .grw-sidebar {
+    // Pagetree
+    .grw-pagetree {
+      @include override-list-group-item-for-pagetree(
+        $color-list,
+        $bgcolor-sidebar-list-group,
+        $color-list-hover,
+        $bgcolor-list-hover,
+        $color-list-active,
+        lighten($bgcolor-list-active, 55%),
+        $gray-400
+      );
+    }
+  }
 }