 <label class="left">
        <ons-radio name="color" input-id="radio-1" checked></ons-radio>
      </label>
      <label for="radio-1" class="center">
        Red
      </label>

      <label class="left">
        <ons-radio name="color" input-id="radio-2"></ons-radio>
      </label>
      <label for="radio-2" class="center">
        Blue
      </label>