Color code table columns based on tags

Our privacy officer wants us to start tagging table columns that contain PII. The problem with that is that when you add a tag to a column the only visual indication a tag exists is the information icon (a lower case "i" in a circle). We would like to:

a) assign colors to tags so that when they do display the color is obvious;

b) set the color of a column that has a tag assigned to that tag's color; if more than one tag is assigned choose the color of the first tag to be added.