diff -r 000000000000 -r 6474c204b198 browser/themes/windows/downloads/downloads-aero.css
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/browser/themes/windows/downloads/downloads-aero.css	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,23 @@
+/* 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 downloads.css
+%undef WINDOWS_AERO
+
+@media (-moz-windows-default-theme) and (-moz-os-version: windows-vista),
+       (-moz-windows-default-theme) and (-moz-os-version: windows-win7) {
+  richlistitem[type="download"] {
+    border: 1px solid transparent;
+    border-bottom: 1px solid hsl(213,40%,90%);
+  }
+
+  #downloadsPanel:not([keyfocus]) > #downloadsListBox > richlistitem[type="download"][state="1"][exists]:hover {
+    border: 1px solid hsl(213,45%,65%);
+    box-shadow: 0 0 0 1px hsla(0,0%,100%,.5) inset,
+                0 1px 0 hsla(0,0%,100%,.3) inset;
+    background-image: linear-gradient(hsl(212,86%,92%), hsl(212,91%,86%));
+    color: black;
+  }
+}