Glowing crystal scenery

I was trying to find a way of making coloured crystal looking scenery last night for one of my Sci Fi rides. I actually came across a pretty good workaround by using mushroom lights and embedding them in to the terrain with just the actual lights poking through. However it would have been nice to have some larger ones etc.

Think this would be quite a nice scenery option for a future update, as it works as a light as well!