files-theme-xcad.xaml

[TRAMAduck]

You need to copy and paste the content into your own xaml config, there's unfortunately no other way to import it as far as I know.

I saw your response above from a closed issue. I have an additional question which may show my experience level. Where would the xaml config be? The only xaml I could find is here :
C:\Program Files (x86)\Windows Kits\10\DesignTime\CommonConfiguration\Neutral\UAP\10.0.22621.0\Generic
and when I added it to the themeresources.xaml I did not see anywhere to make the changes.
Also, this is using the Files app (https://files.community/), correct?