Beautiful chair. My wife wanted gray with a more of a furniture style. These certainly fit the description with tufted, nail head upholstery. 

The upholstery is gray, but has lighter and darker threading. This helps match a wider array of colors. The stools sit very comfortably, construction is solid, and assembly is not difficult to anyone with a basic level of hand tool use. I used a 1/4 drive ratchet and 1/8th Allen head socket with a small extension instead of the Allen wrench provided with the hardware. Just easier to handle the tools. 
If you want a true gray that fits a wider color pallet, and a more classic furniture appearance, these seem to have been a great choice for us.