Grabber Lime is indeed a single model year color. So you have quite the rare car on your hands. Fantastic photo. And yes, that color from GM is called "Shock" and is quite retina burning haha. Even as a lime green fan I think Shock crosses the threshold of too bright for my personal tastes.I think I read that 2020 is the last year for Grabber Lime. Also has anyone seen the Highlighter Green on the new Camaros? Striking and also hard to photograph by normal humans.