Description Colorverse Project Constellation a Tau fountain pen ink is a deep shade of orange that comes in a Colorverse's signature 65ml glass bottle with a wider body and a narrow neck. Colorverse fountain pen inks are 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 $59 for US customers, and for orders over $250 for our Canadian customers.