How is Sai Baba's visual appearance described during the Chavadi procession, particularly concerning the interplay of light?

Chapter 51 of the Shri Sai Satcharita provides a striking visual description of Sai Baba during the Chavadi procession. It notes that Baba's face naturally had a golden hue. This radiance was amplified by the light from the torches and the lantern held by Tatya Patil, who walked on Baba's left. The text poetically describes the effect, stating that the mixture of his complexion and the lamplight made his face shine like 'gold mixed with copper, like the morning sun.' This sight was considered a blessed darshan for the devotees. The account also mentions Baba stopping to face north and moving his hand as if calling someone, adding to the mystique of the moment.