In Courts of Stone on page 63 it says that many in the Daidoji family dye their hair white in honour of their founder.
While I might have gotten it wrong or are just misremembering things but wasn't it the Kakita family that used to have white hair in previous editions?
So who in the Crane has white hair?
Who can have white hair?
From what person does the practice stem from? Has it always been the founder of the Daidoji?