<prefab name="Button" type="">
  <asset type="truetype" name="font_main" />

  <UISimpleLabel ref="uiItem" font="font_main" size="32" />
  <UISimpleMenuItem ref="menuItem" />

  <code type="init">
    useEvent([&amp;]{
      uiItem->color = COLOR_RED;
    }, menuItem->eventHoveredOn);

    useEvent([&amp;]{
      uiItem->color = COLOR_BLUE;
    }, menuItem->eventHoveredOff);

    useEvent([&amp;]{
      uiItem->color = COLOR_GREEN;
    }, menuItem->eventSelected);
  </code>
</prefab>