Apparently GM had a dark green ZL1 convertible at CamaroFest 4.
The car has a tan top & interior and the windshield fence is painted silver.

The word is that it's actually a V-6 dressed to look like a ZL1, but no difference.

The car looks amazing in the color! Why this color is not released for production is beyond me.

Here's some pics:








Edit: Apparently this car was shown at SEMA last year but I never seen it.

 

We need more green choices.
Greens gaining ground among car colors - Autoblog

 

This was one the cars they had at SEMA last year. I believe they called it the Touring edition.