How to Create a Color Theme For Desktop App

What you got to bear in mind is that under recent versions of Windows (Windows 10), themes are selected by the user in settings.

So, it is not a good idea to override that.

Better not touch the color of windows bars.

I’m running Xojo on the Mac. Sorry, I should have specified.

The thread started with a question about Windows apps.

What would you call a theme for a Mac app ?