Highlight parent if child task is in the past

Jett

Hi I have a sheet that has a column called Task name it has a main task with 4 subtasks (child) below it. The sheet has a Task name, Status and due date column. If the 1st sub task due date is in the past and not marked complete how do I have it highlight the parent of this task Red.

If the 1st is complete it is no color if the second task is in the past it will mark the parent red Etc.

Thanks!