diff --git a/src/public/stylesheets/theme-next.css b/src/public/stylesheets/theme-next.css
index 39ca9bd94..e4af65960 100644
--- a/src/public/stylesheets/theme-next.css
+++ b/src/public/stylesheets/theme-next.css
@@ -350,6 +350,7 @@
     --launcher-pane-size: var(--launcher-pane-horizontal-size);
     --active-tab-background-color: var(--launcher-pane-background-color);
     --active-tab-hover-background-color: var(--active-tab-background-color);
+    --new-tab-button-background: transparent;
 }
 
 /* Matches when the left pane is collapsed */