diff -r 000000000000 -r 6474c204b198 toolkit/themes/windows/mozapps/extensions/blocklist.css
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/toolkit/themes/windows/mozapps/extensions/blocklist.css	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,20 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+richlistitem {
+  padding-top: 6px;
+  padding-bottom: 6px;
+  -moz-padding-start: 7px;
+  -moz-padding-end: 7px;
+  border-bottom: 1px solid #C0C0C0;
+}
+
+.addonName {
+  font-weight: bold;
+}
+
+.blockedLabel {
+  font-weight: bold;
+  font-style: italic;
+}