如何在运行时更改unity Lighting Ambient颜色强度？

using UnityEngine;
using UnityEngine.Rendering;

public class ChangeAmbientIntensity : MonoBehaviour
{
    public Color newAmbientColor; // 新的Ambient颜色
    public float intensity = 1f; // 新的Ambient颜色强度

    void Start()
    {
        RenderSettings.ambientMode = AmbientMode.Flat; // 设置Ambient模式为Flat
    }

    void Update()
    {
        RenderSettings.ambientLight = newAmbientColor * intensity; // 更新Ambient颜色强度
    }
}