https://github.com/vector-im/riot-ios/issues/1524
- the app does its own dark theme and prevents the OS from automatically revert the colors in the app
- there are 3 choices on iOS11 for the Riot theme: "auto", "light", "dark". "auto" uses the system settings
- some hairlines being too bright
- fading behind dialog modals being white rather than dark
- grey highlight bar in room list being too light (i think)?