Each of the three individual buttons that held his jacket closed was styled after each of the Princesses; the topmost a golden star, the middle a deep-blue moon, and the bottom, a pink heart, each emblazoned on top of each gold button. While he didn't directly advise for Cadence, it was an acknowledgement of her position as a Princess, and of the Equestria / The Crystal Empires Alliance. (Plus, they got along well--both were quiet fiends for gossip, and Arnon's opinion was often requested  through letter.)