Highlighting Group of Actors

I am wondering if it is possible to group several different actors then highlight all actors in the group a certain color. I am not sure if using a post process material/volume on the camera or editing the materials in the level blueprint is best/feasible. Is it possible to create a “SetHighlightOn” function and apply it to only actors in the group? Any direction or advice is appreciated.

Found answer for grouping here: How to add selected actors to an array? - Programming & Scripting - Epic Developer Community Forums