TWSBI Eco Fountain Pen - Indigo Blue with BronzeAn Eco with a slightly dressier feel The TWSBI Eco Indigo Blue with Bronze takes the standard Eco demonstrator and gives it a more composed finish. The deep blue resin sits somewhere between navy and ink blue, while the bronze trim softens the overall look and stops it feeling cold. Still the same reliable piston filler underneath, just with a colour way that feels more settled and intentional. What sets it apart Deep indigo blue paired with warm