Yes, "Coralsnake" refers to a 1968 Shelby that is special paint, orange exterior, saddle (brown) interior. The "coral" comes from a previous owner of the car.
The only interior colors for 1968 are black and saddle. I think its about an 85 /15 % split.
thecoralsnake.com is my website and internet ID.
Red, black and white interiors were used in 1969. 1967s used white and black. The white was called parchment.