At this moment, it is possible to edit the Maniphest task statuses and to set a transaction icon and color. These configured icons and colors are shown within the transaction log. Additionally, the icon seems to shown at the top left whenever viewing a task as well.
That's awesome, but it would be valuable to apply the color as well for faster scanning of a task status, just like whenever a task is closed where the status turns purple:
In my use case, I have defined custom statuses such as "Greenlit" and "Rejected".
Seeing a hint of green or red in this case would highly improve the fast scanning of the task statuses, whenever the task is opened.