GridIndicatorBuffBar is a plugin for Grid.
It adds an indicator that can be used to display the duration of buffs and debuffs on a player as a bar.
It's pretty basic, with almost no ingame options.
Configuration
You have to enable "Advanced options" for buff and debuff status in Grid.
For the status you want to track, you have to switch Text to "Time left".
For an example, see the screenshot.
Issues can be reported on Github.
The code is licensed under WTFPL