Lamp/Curtain Two Sided Materials

[twc]

What are Coronites/Coroneers/whatever the term is for Corona users doing in place of vRay's two sided material?

I've read the other topics on the matter but one seemed more geared towards vegetation and the other was fairly generic.

This is the typical example of a two sided curtain: http://www.ronenbekerman.com/material-curtain-v-ray/

Perhaps there is a simpler method that provides the same result, specifically with lamp shades. I am all ears! Cheers

PS attached are the scene files of what I'm currently attempting to apply it to.

[Dalton Watts]

Try CoronaFrontBack texture.

[twc]

Where is that located? I don't see it as an option for either new material nor Corona specific shader.