Hmm. When I look at the (as far as I know) native apps that I have running on my Mac at this moment -- Safari, Day One, Numbers, Soulver, Terminal, MailMate, BB

Hmm. When I look at the (as far as I know) native apps that I have running on my Mac at this moment -- Safari, Day One, Numbers, Soulver, Terminal, MailMate, BBEdit -- there's a pretty obvious shared visual language between them. They all look "native Mac" in a way that Slack, Visual Code, LibreOffice, and Calibre don't. (To be fair, Calibre's UX goes out of its way not to fit in with any desktop environment on this planet, so it's probably not a good benchmark.)