How can I change the background image on the macOS switch users screen, not the lock screen

[ianaSystems]

I have a query regarding the customization of the macOS switch users screen. I've been exploring ways to change the background image specifically on the switch users screen, not the lock screen.

My lock screen image change is working fine with background image change.

I am trying to change the background image on the switch users screen. Currently, I am using macOS 12.7.1 Monterey. This is the login screen for multiple user accounts where we choose which account to log in to.

 

[StoneJack]

impossible. it is in OS

 

[msephton]

Agreed. It's crazy this isn't possible in Monterey. I believe they've fixed it in... Sonoma?

 

[Furka]

Try with Deeper Titanium Software

 

[ianaSystems]

@msephton have you tested in Sonoma?
@Furka i think it's not compatible with Monterey.

 

[msephton]

I am on Sonoma, it does change ...but it's bugged in other ways.

I use a portrait display and as I'm logging in after rebooting the wallpaper gets really confused.

The wallpaper is much blurrier than the proper image, is rotated incorrectly, stretched, and there are two progress bars (the one at the bottom is the one that updates).

There's a version of Deeper for each macOS version, but I've never tried it.

https://twitter.com/i/web/status/1762067680721293516