Double click Windows_10_Dark_Theme.reg to enable dark theme, Double click Windows_10_Light_Theme.reg to revert to normal
Windows Registry Editor Version 5.00
[-HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Themes\Personalize]
"AppsUseLightTheme"=dword:00000000
[-HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Themes\Personalize]
"AppsUseLightTheme"=dword:00000000
Windows Registry Editor Version 5.00
[-HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Themes\Personalize]
"AppsUseLightTheme"=dword:00000001
[-HKEY_CURRENT_USER\SOFTWARE\Microsoft\Windows\CurrentVersion\Themes\Personalize]
"AppsUseLightTheme"=dword:00000001