Unity Scripts to Change GameObject Texture OnSomething

hoverColor.cs

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

public class HoverColor : MonoBehaviour
{
	Renderer m_renderer;
	public Texture textureNotPressed, texturePressed;

	void Start ()
	{
		m_renderer = GetComponent<Renderer> ();
	}

	void Update ()
	{
	}

	void OnMouseOver ()
	{
		m_renderer.material.SetTexture ("_MainTex", texturePressed);
	}

	void OnMouseExit ()
	{
		m_renderer.material.SetTexture ("_MainTex", textureNotPressed);
	}

}

pressedColor.cs

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

public class PressedButton : MonoBehaviour
{
	Renderer m_renderer;
	public Texture textureNotPressed, texturePressed;

	void Start ()
	{
		m_renderer = GetComponent<Renderer> ();
	}

	void Update ()
	{		
	}

	void OnMouseDown ()
	{
		m_renderer.material.SetTexture ("_MainTex", texturePressed);
	}

	void OnMouseUp ()
	{
		m_renderer.material.SetTexture ("_MainTex", textureNotPressed);
	}

}

toggleColor.cs

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

public class ToggleColor : MonoBehaviour
{
	bool isPressed = false;

	Renderer m_renderer;
	public Texture textureNotPressed, texturePressed;

	void Start ()
	{
		m_renderer = GetComponent<Renderer> ();
	}

	void Update ()
	{
	}

	void OnMouseUp ()
	{
		if (isPressed) {
			m_renderer.material.SetTexture ("_MainTex", textureNotPressed);
			isPressed = false;
		} else {
			m_renderer.material.SetTexture ("_MainTex", texturePressed);
			isPressed = true;
		}
	}

}

UnityChangeTexture

Version 5.6

* Pressed

Changes GameObject texture when clicked/pressed. OnMouseUp the texture returns to it's original state. 

* Toggle

Changes GameObject texture when clicked/pressed and saves it state. The texture only change when pressed again.

* Hover

Changes texture when the mouse cursor are over the GameObject. The texture returns to it's original state when mouse exit the GameObject.