Normally I would agree. The basic Mac tab colors are pretty standard. But I rarely keep any item in DT3Pro that is in my Finder. I endeavor to keep the Finder and the DT DB completely separate and distinctly different types of data.
There have been a few exceptions with instruction manual PDFs and similar but probably less than 50 documents in the last 5-7 years.
The only thing tagged in my Finder is the “2020” folders for financial information filing of account statements. The colored tag just catches my eye easier for dragging and dropping downloads from the bank to folders in my Finder. Though these are not imported into DT, if there were, they would be in the Finance.db, not the Reference.db where the 799 artifacts are tagged. I have never created the tags that appear in my listing of tags. I recognize the color tags are default. But all other non-default specific tags were somehow automatically generated.
I’ll just begin manually removing tags a handful each day. But not understanding how they appeared a week ago makes me uneasy. I take all the responsibility and blame but I am unaware of anything I did differently than just the normal scan and file/group.