Change Windows 10 to dark mode and black background

Change Windows 10 to dark mode and black background using Registry (cmd.exe)

c:\> reg add "HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Themes\Personalize" /v "AppsUseLightTheme" /t REG_DWORD /d "0" /f
c:\> reg add "HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Themes\Personalize" /v "SystemUsesLightTheme" /t REG_DWORD /d "0" /f
c:\> powershell -command add-type -typedefinition """"using System;`n using System.Runtime.InteropServices;`n public class PInvoke { [DllImport(`"""user32.dll`""")] public static extern bool SetSysColors(int cElements, int[] lpaElements, int[] lpaRgbValues); }""""; [PInvoke]::SetSysColors(1, @(1), @(0x000000))

 

Ref:

https://superuser.com/questions/1214337/update-hkcu-control-panel-colors-background-via-cmd-and-apply-immediately