Hello Button.

    useEvent([&]{
      hoverDeocration->color = COLOR_WHITE;
      backgroundLeft->color = backgroundMiddle->color = backgroundRight->color = COLOR_BLUE;
      wingsLeft->texture = &wingsOpen->texture;
      wingsRight->texture = &wingsOpen->texture;
    }, menuItem->eventHoveredOn);

    useEvent([&]{
      hoverDeocration->color = COLOR_TRANSPARENT;
      backgroundLeft->color = backgroundMiddle->color = backgroundRight->color = COLOR_RED;
      wingsLeft->texture = &wingsDown->texture;
      wingsRight->texture = &wingsDown->texture;
    }, menuItem->eventHoveredOff);