code: function LI(props) {
    return (
      <MenuItem
        style={{cursor: 'pointer', userSelect: 'none'}}
        highlightedStyle={{background: 'gray'}}
        onItemChosen={e => {
          console.log(`selected ${props.children}, byKeyboard: ${String(e.byKeyboard)}`);
        }}
        {...props}
      />
    );
  }
docs: MenuItems don't come with any styling by default! You'll probably want to make your own component which wraps them and adds your own application's style to them like this.