Nightshade green is a very tall order...almost impossible to find in original condition. Quite a number of 68's with less desirable/outdated colors and after changing hands were repainted. Over 30 years, I have only seen maybe 40 painted such color. From what I remember, quite a high percentage were 6 cylinders and 2 bbl 350's.

May want to consider a Firebird with a solid body that needs repaint.

I had a Linden Green 67 numbers matching 400 that I sold 10 years ago...only 400 I have ever seen in that color until one came up for sale on Ebay last summer. Been looking for that trim tag color since and regret selling it. In person, it is sharp.