inav-configurator/tabs/options.html

<div class="notifications">
  <label><input type="checkbox" /><span i18n="options_receive_app_notifications"></span></label>
</div>
<div class="statistics">
  <label><input type="checkbox" /><span i18n="options_improve_configurator"></span></label>
</div>
<div class="appearance">
  <label>
  <input type="radio" name="RadioGroup1" value="1" id="restore">
  Dark Theme</label>
  <br>
  <label>
  <input type="radio" name="RadioGroup1" value="2" id="remove">
  Light Theme</label>
</div>