Dynamic Desktop Mockup for App Preferences

My app supports multiple displays. To demonstrate a related setting I'm showing a mockup of user's desktops. It takes into account user's desktop pictures, UI color settings and localization. Windows are drawn in code as well.

I could go with static images, but this is much more interesting and challenging.

This UI is part of "HazeOver: Distraction Dimmer" app and it's now live on the Mac App Store