That's great lochi009, thanks for sharing.
I'm sure it will be useful to people who need to import things from MS Office.
For people who want to use these colours please refer to this wiki page section https://wiki.scribus.net/canvas/How_to_create_your_own_colours#Importing_colours_from_another_document
which shows you how to get them into your document. (Substitute the downloaded XML document in place of the SLA mentioned in the instructions.)
Maybe, as you say, they could be included in the standard Scribus installation packages.