Didn’t you just post this in the iOS 11 beta thread?....
There’s a new “Smart Invert” option. It looks pretty cool on the home screen but it causes really weird color effects in most apps. Not quite what we are looking for in a true dark mode.
Found this. Beta testers, let us know what this is all about!
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Since it's a "redesigned" version of invert colors, isn't it likely to just be a new version of the accessibility shortcut called "Invert Colors."
Give iOS a theme store. It's way past its time. iOS feels dated like comparing Windows 95 to 10 LOL.