"I always do book signings with the same blue pen. That way, if I add a personalised message to a book I've already signed, it'll be in the same colour as my signature"

John Grisham is highlighting the significance of consistency in his book signings. By utilizing the exact same blue pen for all of his finalizings, he guarantees that any customized messages he contributes to a book he has already signed will be in the very same colour as his signature. This is necessary to him since it develops a sense of continuity and harmony in his work. He wants readers to be able to recognize his signature and understand that it is genuine. By using the very same pen, he is likewise able to develop a signature that is identifiable and constant. This quote shows that John Grisham values consistency and uniformity in his work, which he takes pride in his signature.