Why Does My Jupyter Lab Cell Turn Orange With Every New Edit Or When I Type In It?

I recently installed Cron via jupyterlab_scheduler in the anaconda extensions in a conda environment I usually work in. This was to schedule my jupyterlab notebooks. However, there

Solution 1:

As explained in the JupyterLab 3.1 changelog, specifically the user-facing changes section, a new new visual indicator was introduced to highlight cells in which the code changed in the editor since last execution:

The indicator is currently implemented by changing the cell collapser and the cell execution counter color to orange, and adding a filled orange circle icon left execution counter.

Hopefully, this will improve the situational awareness of the users and lead to more consistent state of the notebooks on save. If you come to like this solution you may be interested in using nbsafety which takes it a step further by actually analysing the dependencies and preventing out-of-order execution.