SharePoint Online: Remove a Custom Theme using PowerShell

Requirement: Remove a custom theme in SharePoint Online

SharePoint Online: PowerShell to Delete a Theme
Here is the PnP PowerShell to remove a theme in SharePoint Online.

#Config Variables
$AdminSiteURL = "https://crescent-Admin.sharepoint.com"
$ThemeName = "Corporate Theme"

#Connect to PnP Online
Connect-PnPOnline -Url $AdminSiteURL -UseWebLogin

#Get the Custom Theme
$Theme = Get-PnPTenantTheme | Where {$_.Name -eq $ThemeName}

If ($Theme.Count -eq 0) 
{ 
    Write-host "The specified Theme '$themeName' doesn't exist!" -ForegroundColor Yellow
    Break; 
}

#Remove the Theme
Remove-PnPTenantTheme -name $Theme.Name
Write-host "Custom Theme '$ThemeName' Removed Successfully!" -ForegroundColor Green

If you remove a custom theme, any site uses the particular theme will not have any effect! They continue to use the colors of the deleted theme until you change it to a new theme.