Dynamo script to change color of all tags in a project

Thanks @kennyb6, my plan was to edit the label in the tag family which has a ‘Color’ parameter. I understand that this means opening the family document, editing that parameter, reloading the family then close the family document. I found another thread that comes close to want i want (instead of the color they change the font) but i can’t seem to make it work.
here’s the link:

However if anyone has a better way I would really appreciate any input.