Ja'far bin Amr bin Hurayth narrates from his father (Sayyiduna Amr bin Hurayth, may Allah be pleased with him) that he (peace and blessings be upon him) addressed the people while wearing a black turban.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الجمعة / 5976
Ja'far bin Amr bin Hurayth narrates from his father (Sayyiduna Amr bin Hurayth, may Allah be pleased with him) that he said: I saw the Prophet (peace and blessings be upon him) on the pulpit wearing a black turban, one end of which hung between his (peace and blessings be upon him) shoulders.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الجمعة / 5977
Sayyiduna Jabir (may Allah be pleased with him) says that the Messenger of Allah (peace and blessings be upon him) entered (Makkah) on the day of the Conquest, and he (peace and blessings be upon him) was wearing a black turban.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الجمعة / 5978
Milhan bin Thawban (may Allah have mercy on him) says: Ammar bin Yasir (may Allah be pleased with him) was with us in Kufah for a year, and he used to deliver the Friday sermon to us every Friday while wearing a black turban.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الجمعة / 5980
Abu Ja'far al-Ansari (may Allah have mercy on him) says: I was present at the house of Sayyiduna Uthman (may Allah be pleased with him) while he was besieged. Sayyiduna Uthman (may Allah be pleased with him) was martyred. I passed through the mosque, and there was a man calling out in the women's shaded area, sitting with his knees drawn up and his sword wrapped around them, wearing a black turban. It was Sayyiduna Ali (may Allah be pleased with him). He said: What happened to Sayyiduna Uthman (may Allah be pleased with him)? I said: He has been martyred. He said: Ruin be upon you for all time.
Hadith Referenceالسنن الكبرى للبيهقي / كتاب الجمعة / 5981