Trail Colors ??

i want to change the trail colors [0, 1, 2, 3, 4] but i can't find a way to access them unless i use an editor script:

 using UnityEngine;
 using System.Collections;
 using UnityEditor;
 
 namespace UnityEditor
 {
     public class editor_Shop : MonoBehaviour
     {
         public static void GetTrailColors (TrailRenderer t)
         {
             TrailRenderer trail = t;
             SerializedObject Trail = new SerializedObject(trail);
             
             Trail.FindProperty("m_Colors.m_Color[0]").colorValue = Color.green;
             Trail.FindProperty("m_Colors.m_Color[1]").colorValue = Color.black;
             Trail.FindProperty("m_Colors.m_Color[2]").colorValue = Color.gray;
             Trail.FindProperty("m_Colors.m_Color[3]").colorValue = Color.blue;
             Trail.FindProperty("m_Colors.m_Color[4]").colorValue = Color.white;

             Trail.ApplyModifiedProperties();
         }
     }
 }

but it wont apply on devices because it's an editor script ! so what to do ??