Workflow Task Colour Codes
The following legend shows the meaning of the colour codes for workflow tasks:

Not Started
The task has not been marked as completed.
Completed
The task has been marked as successfully completed.
Rejected
A previously-completed task has been rejected as incomplete.
Due date changed
The original due due date for this task has been updated by a user.
Overdue
The task has not been marked as completed, and the due date has passed.
Work in Progress (WIP)
A user has marked this task as a 'work-in-progress'.
This typically indicates that the assigned user has viewed the task and is actively working on it, but has not yet completed it.
Overdue Work in Progress
A user has marked this task as a 'work-in-progress', and this task is also overdue