“Bottom line: if Notification Center is on top, it shouldn’t use dark linen; if it uses dark linen, it should be at layer zero, underneath.”
In the spirit of consistent skeuomorphism, I like to think of Notification Center as the flat sheet to layer zero’s fitted sheet.
I like to think: “What the fuck are you all on about? Nobody’s making mental models of OS texture topology, I guarantee you. Nobody but you.”