The text mentions the author was "yellow with half a turmeric root." What exactly does this idiom mean in this context and how was this issue addressed?

According to the narrative in Chapter 2, the phrase "yellow with half a turmeric root" refers to someone who "talks nonsense without merit." The author, Hemadpant, applies this to himself to describe his tendency towards prideful and empty debating. This flaw was addressed by Sai Baba through what the author calls a "speech-arrow aimed at the debate to destroy my pride." This came in the form of bestowing the name "Hemadpant" upon him. As explained in Chapter 2, this name was not just an honor but a meaningful lesson to make the author's pride dissolve and ensure he would "remain aware for life and always be humble."