For what special festival did Maharaj request that Kashiram make him a green kafni instead of his usual white one?

The account in Chapter 0 does not mention any special festival or a specific request from Maharaj for a green kafni. It states that Kashiram, out of his devotion, stitched and gave Maharaj a green kafni and a green cap. This is mentioned in contrast to Maharaj's usual attire, which was a white kafni and a dhoti tied on his head. The act of giving the green garments appears to be an independent offering from Kashiram to express his service, rather than a fulfillment of a direct request from Maharaj for a particular occasion.