I purchased a Natuzzi 2-cushion sofa while I was living in Milan. It's about 5 years old. It is all leather with a subtle chrome frame. Leather is sort of an indigo/blue jean type color. Faces of seat cushions and seat backs have faded a bit. When I apply a quality leather cream the color returns for a short while. The seat faces and backs have also lost some of the sheen. The last photo indicates the original, non-faded color. Any idea which products I should use to restore both the color and finish?