Just the general carpet/vinyl dye. Here is a link:
http://d-a-p-i.com/sem.JPG
It doesn't finish badly. It always looks brand new except that it doesn't have that oem gloss that it originally had. It leaves a sort of flat and matte look with no shine.
In contrast, I was in a friends subaru not too long ago and it was obvious that part of her dash had been dyed as it had a super shiny "how could you not know this was refinished" type of gloss. It looked like it had been clear coated.
Thanks for the reply Jake.