Note out-of-range color?

I was assigning some hotkeys and noticed in the key commands there is a setting for note out-of-range. But I can’t find the actual setting in the view menu. Nor does the hotkey I assigned work. Is this a future feature? (say that 10 times fast) Or am I missing something?
Screen Shot 2018-08-30 at 6.44.11 PM.png

It is a future feature, not yet implemented, which is why it doesn’t appear in the menus and it doesn’t do anything.