diff --git a/toolkit/themes/shared/menulist.css b/toolkit/themes/shared/menulist.css
index e5ac973b1ee2595e8547680465e25d537685a9e7..20f85152d783c81be5e29846353daca9ccd0c67d 100644
--- a/toolkit/themes/shared/menulist.css
+++ b/toolkit/themes/shared/menulist.css
@@ -53,7 +53,7 @@
 
 :host(:not([native])) {
   appearance: none;
-  background-color: var(--button-background-color);
+  background-color: light-dark(rgba(0,0,0,.1), rgba(255,255,255,.1));
   color: var(--button-text-color);
   border-radius: 4px;
   padding-block: 4px;