--- a/browser/themes/shared/browser.inc.css
+++ b/browser/themes/shared/browser.inc.css
@@ -88,16 +88,17 @@
 
 /* Page action button */
 #urlbar-page-action-button {
   -moz-appearance: none;
   border-style: none;
   list-style-image: url("chrome://browser/skin/page-action.svg");
   margin: 0;
   padding: 0 6px;
+  color: inherit;
   -moz-context-properties: fill;
   fill: currentColor;
 }
 
 #urlbar-page-action-button > .toolbarbutton-icon {
   width: 16px;
 }