Electric look to the lightsaber.
Need to add glow. anyone know how to make the glow look realistic in cycles?
The best way to add the glow is to add a glare effect in the compositor 
Like this: http://i.imgur.com/XlGtH6m.png
One thing I want is a way to make the gbeam essentially white with just a tint of color to it, and give the aura the real color.
I mean to the object. not just have the renderlayer.
There is other ways to do it, but the method i posted is the easiest, and by far the fastest to render. You can put the object in a separate render layer.
The only other way I know of to get that glare effect without using compositing would be to have a volumetric scatter in the environment. You’d be much better off doing it in compositing.