This is the first of a collection of classic chairs I'm creating in Blender. Each part (like back, seat cushion, etc.) is uv'ed ,and has a stencil painted texture in order to avoid any noticeable tiling. The color of the leather material is applied with a Color Ramp, to create subtle color variations to enhance realism, and allow you to change the color of the leather to whatever you like. I'm including an .obj file for non-Blender users, a .zip file with the textures and a screenshot of the Color Ramp used so it can be replicated in V-ray or whatever your renderer of choice.