This video explains to you how to copy your modern SharePoint Online theme to your other Office 365 tenants using using PowerShell, SharePoint Online Management Shell, and the Export-Clixml command.
PowerShell commands used include: "Connect-SPOService", "Get-SPOTheme", "Export-Clixml", "Import-Clixml" "Add-SPOTheme"
Music source: www.bensound.com
