Ultimate Guide to Indigo Color: 2022 What Do IndiGo's Codeshares Mean For The Airline? IndiGo Teams Up With Marigold Aviation For Prestigious Cadet Pilot Program Images Of Indigo Dark Indigo Color ArtyClick INDIGO Leather Chelsea Ankle Boots. The kind of boot that never tries too hard. INDIGO is your premium leather Chelsea, done properly. Clean lines, elastic side panels, and that pull on ease that makes getting dressed feel effortless. Available in chocolate and black leather, shes the definition of polished without being precious.