How to change Text and Image color of button?

[ondrejsevcik]

Hi,
I would love to change button color on click but have no idea how to access the color. I see that my button has component Image which includes that color however I am unable to access it. I have the same issue with button’s text where I also didn’t found a way how to access it.

I have tried follow this tutorial but I am getting error (more on screenshots).

// I am also using this import on top if it is relevant
using UnityEngine.UIElements;

public class GameManager : MonoBehaviour {
//...
 // This is my onclick function
 public void SelectLevel(int level ) {
  Debug.Log(level);
  GameObject btn = GameObject.Find("Btn" + level);
  Debug.Log(btn);
  Image imgButton = btn.GetComponent<Image>();
  Debug.Log(imgButton);
 }
}

This is log:

This is the btn in inspector:

[ondrejsevcik]

Issue was in import

// Don't use
using UnityEngine.UIElements;
// Use
using UnityEngine.UI;