Notification at project level for over allocation

Hi,

Looking to display a message at the project level if any resource plan within that project is over allocated, i.e. allocated hours>planned hours. This is easy to do at the Resource Plan level but we are looking to do this at the project level to ensure the PM is aware that the resource manager has exceeded the planned hours for the resource plan. With larger projects with many resource plans, this can be overlooked, so we would like to display a message at the project level, similar to a g_form.addWarningMessage item. Has anyone done something similar to this, and if so, could you share your setup or offer any insight? Thanks in advance!