Acceder a un radio button

radio.js

<br><label>Color: </label>
            <ul>
            <label class="radio-inline">
              <input type="radio" name="color" id="color1" value="label-warning" checked> <h4><span class="label label-warning">Etiqueta</span></h4>
            </label>
            <label class="radio-inline">
              <input type="radio" name="color" id="color2" value="label-danger"> <h4><span class="label label-danger">Etiqueta</span></h4>
            </label>
            <label class="radio-inline">
              <input type="radio" name="color" id="color3" value="label-info"> <h4><span class="label label-info">Etiqueta</span></h4>
            </label>
            <br><label class="radio-inline">
              <input type="radio" name="color" id="color4" value="label-success"> <h4><span class="label label-success">Etiqueta</span></h4>
            </label>
            <label class="radio-inline">
              <input type="radio" name="color" id="color5" value="label-primary"> <h4><span class="label label-primary">Etiqueta</span></h4>
            </label>
            <label class="radio-inline">
              <input type="radio" name="color" id="color6" value="label-default"> <h4><span class="label label-default">Etiqueta</span></h4>
            </label>
          </ul>
          
    var color = $('input[name=color]:radio:checked').val()