Weird grey colouring in timecycle

Hello, first time posting anything here, ive had unity for a while though.. never really got into it until recently

but my issue is, i am trying to do a time cycle with directional lights, but when it gets dark everything has a weird grey tone to it, and certain objects dont go dark. like in the picture, heres my code

Code (CSharp):

1. using UnityEngine;
2. using System.Collections;
3.  
4. public class DayNight : MonoBehaviour {
5.    
6.     public Light sun;
7.     public float secondsInFullDay = 120f;
8.     [Range(0,1)]
9.     public float currentTimeOfDay = 0;
10.     [HideInInspector]
11.     public float timeMultiplier = 1f;
12.    
13.     float sunInitialIntensity;
14.    
15.     void Start() {
16.         sunInitialIntensity = sun.intensity;
17.     }
18.    
19.     void Update() {
20.         UpdateSun();
21.        
22.         currentTimeOfDay += (Time.deltaTime / secondsInFullDay) * timeMultiplier;
23.        
24.         if (currentTimeOfDay >= 1) {
25.             currentTimeOfDay = 0;
26.         }
27.     }
28.    
29.     void UpdateSun() {
30.         sun.transform.localRotation = Quaternion.Euler((currentTimeOfDay * 360f) - 90, 170, 0);
31.        
32.         float intensityMultiplier = 1;
33.         if (currentTimeOfDay <= 0.23f || currentTimeOfDay >= 0.75f) {
34.             intensityMultiplier = 0;
35.         }
36.         else if (currentTimeOfDay <= 0.25f) {
37.             intensityMultiplier = Mathf.Clamp01((currentTimeOfDay - 0.23f) * (1 / 0.02f));
38.         }
39.         else if (currentTimeOfDay >= 0.73f) {
40.             intensityMultiplier = Mathf.Clamp01(1 - ((currentTimeOfDay - 0.73f) * (1 / 0.02f)));
41.         }
42.        
43.         sun.intensity = sunInitialIntensity * intensityMultiplier;
44.     }
45. }

not really sure what to do about it :/ im using unity 5.1.1f1 Personal if that helps...

 

completely forgot about this post... but im still getting the issue. i took a break for a bit which is why i forgot

 

keep forgetting i posted here, been a while since ive had unity open.. ill keep this here in case i still get the error or whatever this is