Mufaddal1125

$mode = Get-ItemProperty -Path HKCU:\SOFTWARE\Microsoft\Windows\CurrentVersion\Themes\Personalize -Name AppsUseLightTheme

if ($mode.AppsUseLightTheme -eq 1) {
    Write-Output "Mode is 1, changing to 0"
    Set-ItemProperty -Path HKCU:\SOFTWARE\Microsoft\Windows\CurrentVersion\Themes\Personalize -Name AppsUseLightTheme -Value 0
}

elseif ($mode.AppsUseLightTheme -eq 0) {
    Write-Output "Mode is 0, changing to 1"
    Set-ItemProperty -Path HKCU:\SOFTWARE\Microsoft\Windows\CurrentVersion\Themes\Personalize -Name AppsUseLightTheme -Value 1

Mufaddal1125

<#
.Synopsis
Exports environment variable from the .env file to the current process.

.Description
This function looks for .env file in the current directoty, if present
it loads the environment variable mentioned in the file to the current process.

based on https://github.com/rajivharris/Set-PsEnv