Within Teamwork Projects, you can edit an existing category name and associated color.
Categories can be found in the left-hand pane in the Messages, Files, Notebooks, Links and the Projects lists areas.
To edit a category in one of these areas, hover over the category header to reveal the Manage option.
Select Manage to edit categories.
Within the Managing Categories modal, you will have the both the edit pencil icon and trash can icon to the right of the category name.
Click the edit pencil icon to update a category.
The Edit Category modal will allow you to update the category name and color.
You also have the option to move the category to a top level or sub-category via the drop down menu.
Note: Sub-category's can go up to three levels deep.
Click Update Category to save your changes.
For more information, see: Changing a project category