Suede surface -- NOTE: if you want gold lines on the cover, you will not be able to have a very soft suede surface. This is because I must use a fixative to allow the surface to take the gold paint, and then more fixative to seal the paint so it's waterproof and rub-proof, which inevitably stiffens the leather surface. Sorry, but that's Just How It Is.
Other leather colours may be available, depending on what I can source. Ask in the comments section.