XRLib/Assets/Scripts/Simulator/Model/Entity.cs

using UnityEngine;
using System.Collections.Generic;
using System.Linq;

public class Entity : MonoBehaviour
{
    public string name;
    public MaterialPropertyBlock mpb;
    public List<MeshRenderer> renderers;

    // Start is called once before the first execution of Update after the MonoBehaviour is created
    void Awake()
    {
        renderers = GetComponentsInChildren<MeshRenderer>().ToList();
        mpb = new MaterialPropertyBlock();
    }

    public void SetColor(Color color)
    {
        foreach (var renderer in renderers)
        {
            mpb.SetColor("_BaseColor", color);
            renderer.SetPropertyBlock(mpb);
        }
    }
}