Light, halo and color

I have a prefab that is, maritime navigation lights. It has a Java script that says:

var thisColor: Color;
function Awake (){
  light.color = thisColor;

Each light’s color is then selected from the Inspector. It works well but the problem is that, it should have a halo since ‘Draw Halo’ is selected but that doesn’t appear. It does if that line is missing. It does it too if the line is, for example:

light.color =;

Strange, isn’t it? Is it a bug?

Okay, I solved it by writing:

light.color = Color(thisColor.r,thisColor.g,thisColor.b,1);

I still don’t know why it works better but … I am happy! :wink: