Toggling Death Knight Eyes

There was some comments in Cartel Guild chat earlier, about Death Knights are now able to toggle the glow of their eyes on and off.
Now, I've checked the options in the menu, and I've checked the hairdresser options and I can't find anything.

So. Does anyone know if it -is- possible, and how to do it?

Probably via bug since that's the only thing that comes up when i search for it on the net. Only the glow goes away but your eyes are still blue and all.

I'm able to do it on my gnome DK when I cast certain spells. I'm not sure which spells trigger it, but they remove the glow untill I mount up on any mount. My eyes are still thick blue tinted, so I don't have "living gnome" eyes.