Windows Restart and Ctrl Alt Del Color does not match Accent Color

[ivan-the-bio-lover-42]

Hello,

I am on Windows 10 22H2 build 19045.4529. After trying SecureUXTheme ThemeTool to get a Windows 7 theme going (I am also using DWMBlurGlass), I noticed that whenever I pull up the Ctrl+Alt+Del screen or shut down/restart my PC, the color of said screen is now blue despite the fact that I have dark grey chosen as my accent color (and this was how it was before trying SecureUXTheme). I have tried reverting to the default Windows theme via ThemeTool and using the native Windows settings to no avail. Selecting an accent color and ticking "start, taskbar, and action center" under the accent color settings gives nothing either.

I have read about someone managing to uninstall ThemeTool as seen in #43, and have tried to uninstall using the uninstall button in the GUI, although this has also not worked. I have tried messing with the various installation options (excluding hook explorer) and have tried selecting all of the "ignore" options. I am unsure if there is a way to "uninstall" ThemeTools completely, as the program is located on my external drive.

Here is an example of what I mean:
This is what my accent color is currently and what used to appear whenever I pulled up the ctrl alt del screen or shut down/restarted

However, pulling up that screen now shows this color, and any attempts to change this color back to what I used to have are ignored entirely

I did receive an update before setting up ThemeTools, the theme, or DWMBlurGlass so I'll see if I can roll that back and get any results as I seem to recall reading reports that Win10 updates caused a similar issue. Any help on this matter would be immensely appreciated :)

EDIT: just reverted the update I received today. No dice. The screen in question continues to have a blue background instead of the grey it used to have.