Index: wp-content/themes/twentyfourteen/style.css
===================================================================
--- wp-content/themes/twentyfourteen/style.css	(revision 25686)
+++ wp-content/themes/twentyfourteen/style.css	(working copy)
@@ -609,7 +609,8 @@
 	text-align: center;
 	text-transform: uppercase;
 }
-.search-toggle a {
+.search-toggle a,
+.search-toggle a:hover {
 	color: #fff;
 }
 .search-toggle:hover,