Upgrade to 1.0 and switch clients to dom-repeat where needed.

third_party/polymer/v0_8/components-chromium/paper-radio-button/paper-radio-button.css

+/*
+Copyright (c) 2015 The Polymer Project Authors. All rights reserved.
+This code may only be used under the BSD style license found at http://polymer.github.io/LICENSE.txt
+The complete set of authors may be found at http://polymer.github.io/AUTHORS.txt
+The complete set of contributors may be found at http://polymer.github.io/CONTRIBUTORS.txt
+Code distributed by Google as part of the polymer project is also
+subject to an additional IP rights grant found at http://polymer.github.io/PATENTS.txt
+*/
+
+:host {
+  display: inline-block;
+  white-space: nowrap;
+}
+
+:host(:focus) {
+  outline: none;
+}
+
+#radioContainer {
+  display: inline-block;
+  position: relative;
+  width: 16px;
+  height: 16px;
+  cursor: pointer;
+  vertical-align: middle;
+}
+
+:host #ink {
+  position: absolute;
+  top: -16px;
+  left: -16px;
+  width: 48px;
+  height: 48px;
+  color: var(--paper-radio-button-unchecked-ink-color);
+  opacity: 0.6;
+}
+
+:host #ink[checked] {
+  color: var(--paper-radio-button-checked-ink-color);
+}
+
+:host #offRadio {
+  position: absolute;
+  top: 0px;
+  left: 0px;
+  width: 12px;
+  height: 12px;
+  border-radius: 50%;
+  border: solid 2px;
+  border-color: var(--paper-radio-button-unchecked-color);
+  transition: border-color 0.28s;
+}
+
+:host #onRadio {
+  position: absolute;
+  top: 4px;
+  left: 4px;
+  width: 8px;
+  height: 8px;
+  border-radius: 50%;
+  background-color: var(--paper-radio-button-checked-color);
+  -webkit-transform: scale(0);
+  transform: scale(0);
+  transition: -webkit-transform ease 0.28s;
+  transition: transform ease 0.28s;
+}
+
+:host([checked]) #offRadio {
+  border-color: var(--paper-radio-button-checked-color);
+}
+
+:host([checked]) #onRadio {
+  -webkit-transform: scale(1);
+  transform: scale(1);
+}
+
+#radioLabel {
+  position: relative;
+  display: inline-block;
+  vertical-align: middle;
+  margin-left: 10px;
+  white-space: normal;
+  pointer-events: none;
+  color: var(--paper-radio-button-label-color);
+}
+
+#radioLabel[hidden] {
+  display: none;
+}
+
+/* disabled state */
+:host([disabled]) {
+  pointer-events: none;
+}
+
+:host([disabled]) #offRadio {
+  border-color: var(--paper-radio-button-unchecked-color);
+  opacity: 0.5;
+}
+
+:host([disabled][checked]) #onRadio {
+  background-color: var(--paper-radio-button-unchecked-color);
+  opacity: 0.5;
+}
+
+:host([disabled]) #radioLabel {
+  /* slightly darker than the button, so that it's readable */
+  opacity: 0.65;
+}