Twsbi VAC700R Fountain Pen - Kyanite Blue FOUNTAIN PEN The yellow green color resembles

The yellow green color resembles the depth of color in old mossy trees and garden stones often found in the gardens of Kyoto

it was used as a clothing color for monks and nuns

Made of Brass with a non-slip coating

The red violet color of Cheshire Cat

Twsbi VAC700R Fountain Pen - Kyanite Blue FOUNTAIN PEN The yellow green color resemblesAlthough relatively new to producing their own line of fountain pens, TWSBI has been in the industry for half a century, creating parts for other brands under the name Ta Shin Precision. Within a decade, their piston filled demonstrator pens have become immensely popular for their high quality, large ink capacity, and affordable price point which allows many newer fountain pen users to get their hands on a remarkable pen very early into the hobby.