If you work with tables in Google Docs you will now be able add styling to the borders of individual cells or groups of cells within the table. New controls will allow the application of color, width, and line styles to cell borders in a selection. When the cursor is in a table, the border styling toolbar will appear, allowing the editor to select border styles for a selection of cells or the individual cell containing the cursor.
This feature should roll out to UMICH users in a week or two. For more information: https://support.google.com/docs/answer/3508928