Scrollbar was too dark and not matching other scrollbars. Switched...

Scrollbar was too dark and not matching other scrollbars. Switched scroll_bar_bg_visible attribute to false in gesture_combo_box.xml to fix.
http://jira.secondlife.com/browse/EXT-1451

indra/newview/skins/default/xui/en/widgets/gesture_combo_box.xml

@@ -26,7 +26,7 @@
                               image_disabled="PushButton_Disabled"
                               image_disabled_selected="PushButton_Selected_Disabled" />
   <gesture_combo_box.combo_list bg_writeable_color="MenuDefaultBgColor"
-                                scroll_bar_bg_visible="true" />
+                                scroll_bar_bg_visible="false" />
   <gesture_combo_box.combo_editor name="Combo Text Entry"
                           select_on_focus="true"
                           font="SansSerifSmall" />