3d superscope question

I'm envisioning a preset where the view is of the inside of a 3d superscope. I'm wondering if it is possible to have the points go behind the camera. As far as I can tell it's only possible with a colour change to black past a certain Z value, and the rendermode set to additive.

Is there a better/easier way to do it?

It is the only way I found up to now. Only thing I like to add is that this works even better with maximum blend mode so you can get the color to black "behind" the screen AND fade the colors to black into the "depth" of the screen to increase the 3D-effect.

Thanks for the idea EL-VIS2. Now if only I figur out wats going wrong with it. 😠

Eh, I'll get it soon.