Change the Halo Component (not the default) in a light in C#???

I've seen ways to change the halo on a light. But I want to know how to change the halo that is added from the "Add Component" menu. I've tried everyt$$anonymous$$ng with getcomponent and using public Component! If I try somet$$anonymous$$ng like t$$anonymous$$s:

 lightHalo.Size -= 1;
 //lightHalo being the variable component that is my Halo component that I added

not$$anonymous$$ng works! What can I do? Keep in mind t$$anonymous$$s command I'm trying to do is on the light object as a script component. Please help!