Are you sure you decoded that fender tag correctly, or are you sure its the correct fender tag for the car? I ask because in 66 the only color options for the convertible top were black, white and blue. Also the car appears to be painted the 1966 color of dark turquoise metallic which I've never seen on a Plymouth convertible. It would be a surprising color choice for someone to switch do a color change to. If the dark turquoise color is original to the car, than its a pretty rare color for a Fury convertible. Once you get into it, I'm guessing you'll find the original color in hard to see places like under the carpet, inside the doors and quarter panels or top well, under the hood and in places in the trunk.
If your car has the shifter mounted on a console, it is most likely a Sport Fury, If it has a column shift it is most likely a Fury III. But of course a previous owner may have modified it at some point.
I like plum crazy purple, but I think it would look out of place on a mid 60's car. A light purple metallic was available on the 66 Plymouths. If you do stray from the 1966 color choices, I would stay within a couple model years for the color choices. There was a beautiful one year only Medium Turquoise Metallic (Surf Turquoise Metallic) in the 1968 model year. The 68 Surf Turquoise color was a bit more appealing than the 66-67 Dark turquoise color.
