Highlight complex gameobject

I downloaded some characters here: Unity Asset Store - The Best Assets for Game Making

I created a prefab out of them and I am creating copies of them in my game. I’d like to highlight one of them at a particular time (i.e. change their color when it is their turn). Since it’s based on turn, it needs to be done programatically.

The prefab is soldier and has a soldier_Military_Male_Lod_1 in its directory that has a shader. I can change the color of that shader manually or while previewing the game, but I’m not sure how to access it from within the script.

Seems like I would use GetComponentsInChildren, but the name of the shader component is Soldier_D_1024_alt, and I’m not sure how to reference this in the script.

How can I programmatically highlight / change the shader color of a prefab with its shader in its children?

How about this?

Renderer renderer = this.GetComponentInChildren<Renderer>() as Renderer;
Shader highlightedShader = Shader.Find("Toon/Basic Outline"); // Replace with whatever shader you want
renderer.material.shader = highlightedShader;