Check when color is approximate to another

I am making a fader that loads when the color is white, the scripts fade out uses color.lerp which means i cannot actually check when the color is approximately white. since i cant it takes a long time to load. what i want is to be able to check if the color is near white and not actually white.

Code:

 using UnityEngine;
 using System.Collections;
 using UnityEngine.UI;
 
 public class Fader : MonoBehaviour {
     public bool fadeIn = true;
     Image image;
     RectTransform rTransform;
     public float fadeSpeed = 2f;
     private bool canLoad = false;
     private int levelToLoad = 0;
     public Color loadColor;
 
     void Awake(){
         image = gameObject.GetComponent ("Image") as Image;
         rTransform = gameObject.GetComponent ("RectTransform") as RectTransform;
         rTransform.sizeDelta = new Vector2 (Screen.width,Screen.height);
     }
 
     void Update(){
         if(fadeIn){
             image.color = Color.Lerp(image.color,Color.clear,Time.deltaTime*fadeSpeed);
         }
 
         if(!fadeIn){
             image.color = Color.Lerp(image.color,Color.white,Time.deltaTime*fadeSpeed);
         }
 
         if(image.color == Color.grey){
             if(canLoad){
                 Application.LoadLevel(levelToLoad);
             }
         }
     }
 
     public void FadeOutAndLoad(int level){
         fadeIn = false;
         canLoad = true;
         levelToLoad = level;
     }
 
     public void FadeIn(){
         fadeIn = true;
     }
 }