Description Colorverse Project Constellation a Tau fountain pen ink is a deep shade of orange and comes as a 3ml sample in a plastic vial with a dip at the bottom to allow you to easily get every drop, labeled with the name of the ink brand and color. Colorverse Project Constellation a Tau fountain pen ink is part of the Special Edition Project Constellation II collection, and is made in South Korea. Having trouble deciding between colors? Use our Ink Comparison Tool to quickly and easily view different colors side by side. We offer Free Shipping on all orders over $50 for US customers, and for orders over $250 for our Canadian customers.