In early-modern times, people in this post were permitted by the Emperor to use kinjiki (seven colors traditionally reserved for the imperial family and nobility), and even jigenin could use kane (oxidized liquid) to blacken their teeth, just like the Tosho-ke.
近世では禁色勅許はもちろん、地下人であっても堂上家同様に鉄漿をつけることができた。