diff --git a/stable/ChangeFullWindowsTheme.ps1 b/stable/ChangeFullWindowsTheme.ps1
new file mode 100644
index 0000000..1e0b001
--- /dev/null
+++ b/stable/ChangeFullWindowsTheme.ps1
@@ -0,0 +1,28 @@
+$params = $Input | ConvertFrom-Json
+
+$registryPath = "HKCU:\Software\Microsoft\Windows\CurrentVersion\Themes\Personalize"
+$dwordValue = 1 - $(If ($params.themeMode -Eq 0) {$params.daySegment2} Else {$params.themeMode - 1})
+
+if (Test-Path $registryPath) {
+    Set-ItemProperty -Path $registryPath -Name "AppsUseLightTheme" -Value $dwordValue -Type DWORD -Force
+    Set-ItemProperty -Path $registryPath -Name "SystemUsesLightTheme" -Value $dwordValue -Type DWORD -Force
+}
+
+if ([System.Environment]::OSVersion.Version.Build -ge 22000)
+{
+	# Call Windows theme refresh
+	Add-Type -TypeDefinition @"
+using System;
+using System.Runtime.InteropServices;
+
+public class Win32Utils {
+	[DllImport("user32.dll", SetLastError = true, CharSet = CharSet.Auto)]
+	public static extern int SendMessageTimeout(IntPtr hWnd, int Msg, IntPtr wParam, string lParam, int fuFlags, int uTimeout, out IntPtr lpdwResult);
+}
+"@ -PassThru
+
+	$HWND_BROADCAST = [IntPtr]0xFFFF
+	$WM_SETTINGCHANGE = 0x1A
+	$SMTO_ABORTIFHUNG = 0x2
+	[Win32Utils]::SendMessageTimeout($HWND_BROADCAST, $WM_SETTINGCHANGE, [IntPtr]::Zero, "ImmersiveColorSet", $SMTO_ABORTIFHUNG, 5000, [ref]([IntPtr]::Zero))
+}