Something changed in Windows 8.1. For Win8 I use this AutoIT script at the start: RegWrite ( "HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Accent" , "ColorSet_Version3" , "REG_DWORD" , "0x0000000e" ) RunWait (@ComSpec & " /c taskkill.exe /f /im explorer.exe") Run(@ComSpec & " /c Start c:\windows\explorer.exe") $metro = "1"This changes the metro screen to red (from the default). And it works in Windows 8.1. However after the work is done, this part does NOT change it to green (or anything). But later if I change the reg key to 0x0000000b, and restart, the color still stays as red. I've tried other hex codes and they do not make any difference. Even if I manually change the registry key, and either kill and re-open explorer or restart the computer. I should also note, that in Audit Mode, you can't launch explorer.exe nor cmd.exe from Task Manager unless you check the "create this task with administrative priveledges" box.