Abu Quhafah was brought on the day of the conquest of Mecca with head and beard while like hyssop. The Messenger of Allah ﷺ said: Change this something, but avoid black. (Using translation from Abū Dāʾūd 4204)
أُتِيَ النَّبِيُّ ﷺ يَوْمَ فَتْحِ مَكَّةَ بِأَبِي قُحَافَةَ وَلِحْيَتُهُ وَرَأْسُهُ كَأَنَّهُ ثَغَامَةٌ فَقَالَ رَسُولُ اللهِ ﷺ «غَيِّرُوهُ بِشَيْءٍ وَجَنِّبُوهُ السَّوَادَ»