Yes- It was artificial leather in a grey-brown color. I saw an original three-window coupe many years ago with the "leather" option. Everything was in "leather" sewn in the deluxe pattern. That included the doors, headliner, visors, everything.
If you decide to go that route be prepared for a lot of so-called "experts" to tell you it's wrong! As I recall, the owner told me that it does get a little tiresome arguing with people so he kept some dealer documentation in the glove box to prove the car's authenticity. For some folks that still wasn't enough!
As a side note, I have hydraulic brakes on my '35 (which I love). However, I am still amazed as to the number people who seem to be eager to tell me my car is "wrong" because it should have mechanical brakes. This is not exactly new information for me. I have owned the car 52 years and I made the conversion. Is the car "wrong?" Not for me. So, as was stated in another reply, it is your car do what you want!
Tom