diff -r 000000000000 -r 6474c204b198 browser/themes/linux/preferences/in-content/preferences.css
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/browser/themes/linux/preferences/in-content/preferences.css	Wed Dec 31 06:09:35 2014 +0100
@@ -0,0 +1,78 @@
+/* - 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/. */
+
+%include ../../../shared/incontentprefs/preferences.css
+
+button > .button-box,
+menulist > .menulist-label-box {
+  -moz-appearance: none;
+}
+
+button[type="menu"] > .button-box > .button-menu-dropmarker {
+  -moz-appearance: none !important;
+}
+
+menulist:not([editable="true"]) > .menulist-dropmarker {
+  display: -moz-box;
+  margin-top: 6px;
+  margin-bottom: 6px;
+}
+
+checkbox {
+  -moz-binding: url("chrome://global/content/bindings/checkbox.xml#checkbox");
+  -moz-box-align: center;
+}
+
+checkbox:hover::before,
+checkbox[checked]::before {
+  -moz-margin-end: -19px;
+  -moz-margin-start: 4px;
+  background-repeat: no-repeat;
+}
+
+radio {
+  -moz-binding: url("chrome://global/content/bindings/radio.xml#radio");
+  -moz-box-align: center;
+  -moz-margin-start: 0;
+}
+
+.radio-label-box {
+  -moz-appearance: none;
+}
+
+radio:hover::before,
+radio[selected]::before {
+  -moz-margin-end: -17px;
+  -moz-margin-start: 6px;
+}
+
+.numberbox-input-box {
+  -moz-appearance: none;
+  border-width: 0;
+}
+
+spinbuttons {
+  -moz-appearance: none;
+}
+
+.actionsMenu {
+  font-family: "Clear Sans", sans-serif;
+  font-size: 1.25rem;
+  line-height: 22px;
+}
+
+.actionsMenu > .menulist-label-box > .menulist-icon {
+  margin-top: 1px;
+  -moz-margin-start: 1px;
+  -moz-margin-end: 6px;
+}
+
+.actionsMenu > .menulist-label-box > .menulist-label {
+  margin-top: 2px !important;
+}
+
+menulist.actionsMenu > .menulist-dropmarker {
+  margin-top: 11px;
+  margin-bottom: 11px;
+}