Sorry, Mark I didn't see your last response before posting mine (forgot ro refresh). So I have to post again...

Even if Jedi_Padawan doesn't want to know how the shader trick is done, I definitely do! :) Please share.

I love your creative work-arounds and tricks. I wish there was a special place somewhere listing them all -- not the streaightforward explanations as in tutorial collections and not a tiny subset as in the "Dark Arts", although I dearly love both series and use them as reference very often, but a full collection of just tricks, shortcuts and workarounds...