I got the Otterbox Lumen case in gray for my 15 pro Natural Titanium. It looks great. It’s got a clear back which shows the color of the natural titanium. The sides are gray which should help or prevent yellowing. Plus the case is very grippy and the buttons have great tactile button feedback.It really is hard to find a good case for natural titanium. So many ugly cases. I tried a couple but didn’t like any.
Gonna use it naked and get AppleCare+ instead. The phone is too beautiful to cover it up with an ugly case.