Use classic Windows theme for login/logoff UI

The switchover from Luna theme to classic in XP is jarring. To make XP login/logoff UI looking like that of Server 2003, use the at.exe trick and set the SYSTEM account theme to classic. Massive shoutout to Thrawn

Launch a cmd with admin rights, run at.exe <time + 1 minute> /interactive "cmd.exe" to launch another cmd with SYSTEM privileges
Kill explorer.exe using Task Manager
Use the SYSTEM CLI to spawn an explorer.exe shell
Set whatever visual settings you want to. I use classic
Logoff

Did not work. Copying user settings over to SYSTEM with Tweak UI created a mishmash of Luna and classic that was even more jarring