[Light2D] How to get Light2D Component via scripting

I wanna change the Color on a 2D-Light, but i can't seem to figure out how to get the component. Because GetComponent with Light2D isn't reconized as a thing, only Light works. And there is no documentation on 2D-Light yet. So I hope someone knows how to do it.

This is a script stolen from Unity Documentation of Light:

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

 public class lightFlickerTest : MonoBehaviour
 {
     // Interpolate light color between two colors back and forth
     float duration = 1.0f;
     Color color0 = Color.red;
     Color color1 = Color.blue;

     Light lt;

     void Start()
     {
         //This part isn't working right with 2D Light
         lt = GetComponent<Light>();
     }

     void Update()
     {
         // set light color
         float t = Mathf.PingPong(Time.time, duration) / duration;
         lt.color = Color.Lerp(color0, color1, t);
     }
 }