I want to change GANTT chart bar colours based on date to flag items which are late. Scenario as follows:

I have a main task which runs from February 1st through March 1st. I have several indented deliverables listed under this main task with various dates they need to be completed by, e.g. delivery of a specific component. This component is scheduled due on February 1st but supplier tells me it will be 5 days late. When I change the finish date to 5th February I want the bar to automatically turn red as a visual indicator.

Similarly, if the date for the main task slips by 7 days and becomes February 7th, when I change the date for this task I want any late tasks which would as a result now not be late to turn back to green.

Is there a way to do this? (Basically driving sub-task bar colour by the main tasks start and/or finish date.

Thanks in advance for any help with this.