Windows Registry Editor Version 5.00

[hkey_users\default\SOFTWARE\Microsoft\Windows\CurrentVersion\Themes\Personalize]
"AppsUseLightTheme"=dword:00000000
"SystemUsesLightTheme"=dword:00000000

[hkey_users\default\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce]
"AppsUseLightTheme"="reg add HKCU\\SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Themes\\Personalize /v AppsUseLightTheme /t REG_DWORD /d 0 /f"
"SystemUsesLightTheme"="reg add HKCU\\SOFTWARE\\Microsoft\\Windows\\CurrentVersion\\Themes\\Personalize /v SystemUsesLightTheme /t REG_DWORD /d 0 /f"