Bought 2 of these in the 'Granite' color and its the perfect dark charcoal-y gray without being too dark..seems to be true to color as shown online. They are the perfect size to place a tray on top of but still have room to sit on or prop your feet up onto. 
I love the firmness they have, I think they will hold their shape for a long time. Also the fabric material seems to be easily cleanable/durable. 
If you are on the fence about this, I would take the plunge and buy it! Very happy with them.