No system settings are changed here, or the desktop background image / wallpaper on the system, as it was determined during development that Windows takes a long time, 1-3 seconds, and the desktop flickers. The program creates a mouse-permeable window that is placed exactly over the wallpaper area. So here the desktop background is covered by this window in the color you preset!
(Image-1) Change the desktop background to a solid color while hiding the icons!
By temporarily deactivating the background image, for example with a black background and without symbols, you can possibly take a clean screenshot or implement various other automation processes better!
Now it is easy to terminate the program correctly using parameters under MS Windows 11, 10, etc. desktop and server OS Everyone probably knows ► Taskkill