Jin from Yarikawa is a dye for Sakai Clan Armor. It is received during "Journey into the Past". Like every dye it only changes colours.
Play "Journey into the Past"; the dye is given partway through. It cannot be bought.
Once unlocked it shows up as a colour option for Sakai Clan Armor, so you need that outfit to use it.
Adventurer's Fortune
Adventurer's Fortune is a dye for Traveler's Attire. It costs 10 flowers at the Izuhara merchants. Like every dye it only changes colours.
Amber Assassin
Amber Assassin is a dye for Ronin Attire. It costs 10 flowers at the Toyotama merchants. Like every dye it only changes colours.
Ancestral Force
Ancestral Force is a dye for Sakai Clan Armor. It costs 10 flowers at the Toyotama merchants. Like every dye it only changes colours.
Archery Master's Attire
Archery Master's Attire is a dye for Tadayori's Armor. It is a New Game+ dye sold by Baku the Voiceless for 15 Ghost flowers. Like every dye it only changes colours.