Hello Harry Fuller
Welcome to Microsoft Community.
This question is out of reach of the response support community. The best place to get help with your problem is Microsoft Learn(English only),
which aims to support more advanced users like you.
You can also refer to this link to help you solve your problem How to Customize Folders with Desktop.ini - Win32 apps | Microsoft Learn
I won't be able to help you, but I'll leave that question open in case one of our amazing volunteers has ideas for you.
Best Regards,
Tommy-MSFT | Microsoft Community Support Specialist