diff --git a/src/other/firefox/Monterey/parts/toolbox-alt.css b/src/other/firefox/Monterey/parts/toolbox-alt.css
index b0d135a..604e09a 100644
--- a/src/other/firefox/Monterey/parts/toolbox-alt.css
+++ b/src/other/firefox/Monterey/parts/toolbox-alt.css
@@ -80,6 +80,13 @@ findbar:-moz-window-inactive {
 	-moz-box-ordinal-group: 100;
 }
 
+/* Sidebar */
+#sidebar-box,
+.sidebar-panel[lwt-sidebar] {
+	color: var(--gnome-toolbar-color) !important;
+	background: var(--gnome-toolbar-background) !important;
+}
+
 #PersonalToolbar {
 	padding: 0 3px 3px !important;
 	height: 32px !important;
diff --git a/src/other/firefox/Monterey/parts/toolbox.css b/src/other/firefox/Monterey/parts/toolbox.css
index 9dd2f5d..3fc8498 100644
--- a/src/other/firefox/Monterey/parts/toolbox.css
+++ b/src/other/firefox/Monterey/parts/toolbox.css
@@ -91,6 +91,13 @@ findbar:-moz-window-inactive,
 	max-height: 32px !important;
 }
 
+/* Sidebar */
+#sidebar-box,
+.sidebar-panel[lwt-sidebar] {
+	color: var(--gnome-toolbar-color) !important;
+	background: var(--gnome-toolbar-background) !important;
+}
+
 /* bookmark-item */
 toolbarbutton.bookmark-item {
 	padding: 3px 6px !important;
diff --git a/src/other/firefox/WhiteSur/parts/toolbox.css b/src/other/firefox/WhiteSur/parts/toolbox.css
index e443a0e..280f47a 100644
--- a/src/other/firefox/WhiteSur/parts/toolbox.css
+++ b/src/other/firefox/WhiteSur/parts/toolbox.css
@@ -102,6 +102,13 @@ findbar:-moz-window-inactive label,
 	max-height: 32px !important;
 }
 
+/* Sidebar */
+#sidebar-box,
+.sidebar-panel[lwt-sidebar] {
+	color: var(--gnome-toolbar-color) !important;
+	background: var(--gnome-toolbar-background) !important;
+}
+
 /* bookmark-item */
 toolbarbutton.bookmark-item {
 	padding: 3px 6px !important;