Issue with fog

Hello I am trying to develop a scene thatwhen a player goes underwater, it kinda has a underwater effect.
I put the following in the fixed update function in my player.

Code (csharp):

1.  
2. ...
3.     //my water addon
4.    var underwater = 8.24;
5.    if(transform.position.y < underwater)
6.    {
7.       color = Color (56.0, 166.0, 198.0, 122.0);        
8.       RenderSettings.fogColor = color;
9.       RenderSettings.fogDensity = 0.1;
10.    }
11.    else
12.    {
13.       color = Color (78.0, 163.0, 163.0, 255.0);// was 78.0, 142.0, 149.0, 122.0
14.       RenderSettings.fogColor = color;
15.       RenderSettings.fogDensity = .0004;        
16.    }
17.  
18.     //end water
19.  
20.  

My problem is that the fog shows up when the player is underwater, but it is always white. I tried changing the color, but its not working..
I'm trying to give it a blueish color.

Is this a known bug in Unity or am I doing something wrong?
Can I get some help?

Thanks in advance.

 

Color values range from 0 to 1. Both colors you used are white, or rather, way beyond white.

--Eric