diff --git a/chrome/vertical_tabs.css b/chrome/vertical_tabs.css
index 63c2b36..7adcaad 100644
--- a/chrome/vertical_tabs.css
+++ b/chrome/vertical_tabs.css
@@ -31,9 +31,12 @@ See the above repository for updates as well as full license text. */
   left: 0;
   padding-top: var(--uc-navbar-height);
   width: var(--uc-vertical-tabs-width);
-  background-color: var(--lwt-accent-color);
+  background-color: var(--toolbar-bgcolor);
   contain: size;
 }
+:root:not([customizing]) #tabbrowser-tabs:-moz-lwtheme{
+  background-color: var(--lwt-accent-color);
+}
 @media (-moz-bool-pref: "userchrome.vertical-tabs.on-right.enabled"){
   #PersonalToolbar,
   #tab-notification-deck,