Change Canvas Image from Another Script

So I am trying to change a canvas’s image to red if there has been a collision with the player. I have a canvas with an image component, with “Source Image” set to a transparent square that I made in photoshop. I want to change it to another red square that I made in photoshop vi my PlayerBehavior script if there has been a collision. This is what I tried:

using UnityEngine;
using System.Collections;
using UnityEngine.UI;

public class PlayerBehavior : MonoBehaviour {
    Image image;
    void start() { }
    void update() {}

    void OnTriggerEnter2D(Collider2D other) {
	if (other.tag == "bullet") {
		Canvas canvas = GetComponent<Canvas>();
		image = canvas.GetComponent<Image>();
		image.sprite = Resources.Load ("flashred.png");



I am getting this error:

Error CS0266: Cannot implicitly convert type `UnityEngine.Object' to     `UnityEngine.Sprite'. An explicit conversion exists (are you missing a cast?)     (CS0266) (Assembly-CSharp)


image.sprite = Resources.Load ("flashred.png") as Sprite;

I just wanted to note/update: as of Unity 5.6.1f1, and MonoDevelop 5.9.6, the latter example ( by aditya007) works, the former (as Sprite by Namey5) does NOT, I just tested them both; so everyone who needs this: use the second example and you should be fine.