diff -r 000000000000 -r 6474c204b198 browser/themes/windows/downloads/allDownloadsViewOverlay-aero.css
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/browser/themes/windows/downloads/allDownloadsViewOverlay-aero.css	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,35 @@
+/* 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/. */
+
+%define WINDOWS_AERO
+%include allDownloadsViewOverlay.css
+%undef WINDOWS_AERO
+
+@media (-moz-windows-default-theme) {
+  /*
+  -moz-appearance: menuitem is almost right, but the hover effect is not
+  transparent and is lighter than desired.
+
+  Copied from the autocomplete richlistbox styling in
+  toolkit/themes/windows/global/autocomplete.css
+
+  This styling should be kept in sync with the style from the above file.
+  */
+  #downloadsRichListBox > richlistitem.download[selected] {
+    color: inherit;
+    background-color: transparent;
+    /* four gradients for the bevel highlights on each edge, one for blue background */
+    background-image:
+      linear-gradient(to bottom, rgba(255,255,255,0.9) 3px, rgba(255,255,255,0) 3px),
+      linear-gradient(to right, rgba(255,255,255,0.5) 3px, rgba(255,255,255,0) 3px),
+      linear-gradient(to left, rgba(255,255,255,0.5) 3px, rgba(255,255,255,0) 3px),
+      linear-gradient(to top, rgba(255,255,255,0.4) 3px, rgba(255,255,255,0) 3px),
+      linear-gradient(to bottom, rgba(163,196,247,0.3), rgba(122,180,246,0.3));
+    background-clip: content-box;
+    border-radius: 6px;
+    outline: 1px solid rgb(124,163,206);
+    -moz-outline-radius: 3px;
+    outline-offset: -2px;
+  }
+}