--- a/browser/themes/shared/sidebar.inc.css
+++ b/browser/themes/shared/sidebar.inc.css
@@ -4,18 +4,16 @@
  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
 %endif
 
 .sidebar-header,
 #sidebar-header {
   font-size: 1.333em;
   font-weight: lighter;
   padding: 8px;
-  color: -moz-dialogText;
-  text-shadow: none;
 }
 
 .sidebar-splitter {
   -moz-appearance: none;
   border: 0 solid;
   border-inline-end-width: 1px;
   min-width: 1px;
   width: 3px;

--- a/toolkit/themes/linux/global/global.css
+++ b/toolkit/themes/linux/global/global.css
@@ -122,16 +122,18 @@ statusbarpanel {
   padding: 0 1px;
 }
 
 /* XXXBlake yeah, shoot me -- these don't belong here.  I'll move them later. */
 
 sidebarheader {
   min-height: 25px;
   background-color: -moz-Dialog;
+  color: -moz-dialogText;
+  text-shadow: none;
 }
 
 sidebarheader > label {
   padding-inline-start: 4px;
 }
 
 .toolbar-focustarget {
   -moz-user-focus: ignore !important;
@@ -144,20 +146,16 @@ toolbar[mode="text"] .toolbarbutton-text
 
 /* ::::: miscellaneous formatting ::::: */
 
 :root:-moz-lwtheme,
 statusbarpanel:-moz-lwtheme {
   -moz-appearance: none;
 }
 
-sidebarheader:-moz-lwtheme {
-  background: none;
-}
-
 :root:-moz-lwtheme-darktext {
   text-shadow: 0 -0.5px 1.5px white;
 }
 
 :root:-moz-lwtheme-brighttext {
   text-shadow: 1px 1px 1.5px black;
 }
 

--- a/toolkit/themes/osx/global/global.css
+++ b/toolkit/themes/osx/global/global.css
@@ -119,16 +119,22 @@ statusbarpanel {
 }
 
 .statusbarpanel-iconic {
   padding: 0px;
 }
 
 /* ::::: miscellaneous formatting ::::: */
 
+sidebarheader {
+  background-color: -moz-Dialog;
+  color: -moz-dialogText;
+  text-shadow: none;
+}
+
 :root:-moz-lwtheme {
   -moz-appearance: none;
 }
 
 :root:-moz-lwtheme-darktext {
   text-shadow: 0 -0.5px 1.5px white;
 }
 

--- a/toolkit/themes/windows/global/global.css
+++ b/toolkit/themes/windows/global/global.css
@@ -131,16 +131,18 @@ statusbarpanel:not(.statusbar-resizerpan
   padding: 0 1px;
 }
 
 /* XXXBlake yeah, shoot me -- these don't belong here.  I'll move them later. */
 
 sidebarheader {
   min-height: 25px;
   background-color: -moz-Dialog;
+  color: -moz-dialogText;
+  text-shadow: none;
   -moz-appearance: toolbox;
   border-bottom: 1px solid ThreeDShadow;
   border-top: 1px solid ThreeDHighlight;
 }
 
 sidebarheader > label {
   padding-inline-start: 4px;
 }
@@ -163,18 +165,17 @@ toolbar[mode="text"] .toolbarbutton-text
 :root:-moz-lwtheme-darktext {
   text-shadow: 0 -0.5px 1.5px white;
 }
 
 :root:-moz-lwtheme-brighttext {
   text-shadow: 1px 1px 1.5px black;
 }
 
-statusbar:-moz-lwtheme,
-sidebarheader:-moz-lwtheme {
+statusbar:-moz-lwtheme {
   -moz-appearance: none;
   background: none;
   border-style: none;
 }
 
 .inset {
   border: 1px solid ThreeDShadow;
   border-right-color: ThreeDHighlight;