"The Prophet [SAW] used to wear Sibtiyyah sandals and dye his beard yellow with Wars and saffron." And Ibn 'Umar used to do that.  

كَانَ النَّبِيُّ ﷺ يَلْبَسُ النِّعَالَ السِّبْتِيَّةَ وَيُصَفِّرُ لِحْيَتَهُ بِالْوَرْسِ وَالزَّعْفَرَانِ وَكَانَ ابْنُ عُمَرَ يَفْعَلُ ذَلِكَ