I was looking at a Princeton Tec Impact II led light in which the case looked like a "greenish" color. The style number had the case color pre-fix of "NY".
What does the Princeton Tec case color pre-fix of "NY" mean?
I think the NY means "Neon Yellow". That is one of the case colors that Princeton Tec lists for the Impact series. I have a blue Impact II and the designation is "BL". In my case, it's a bit more obvious.