Toggle Group save stats

Hello there, I have toggle group and 3 toggles inside to change cars color and i wanna know how to save selected toggle button to match cars color selected when i leave scene or quit game. Thank you!

Code i use to change texture

 using UnityEngine;
 
 public class Color1Test: MonoBehaviour {
 
     public Renderer rend;
     public Texture[] textures;
 
     void Start()
     {
         rend = GetComponent<Renderer>();
         rend.material.mainTexture = textures[PlayerPrefs.GetInt("SaveColor1", 0)];
     }
 
     public void Red()
     {
         rend.material.mainTexture = textures[0];
         PlayerPrefs.SetInt("SaveColor1", 0);
     }
 
     public void Blue()
     {
         rend.material.mainTexture = textures[1];
         PlayerPrefs.SetInt("SaveColor1", 1);
     }
 
     public void Green()
     {
         rend.material.mainTexture = textures[2];
         PlayerPrefs.SetInt("SaveColor1", 2);
     }
 }