ChaosStunty:
Please enlighten me to your great beard painting secrets!
Thommy H:
Mix up some chaos black with some enchanted blue (about 40/60) as your base coat, then keep adding white and drybrush two or three layers. Finally, wash over in watered down chaos black.
Easy and fast.
wallacer:
either Shadow Grey or Codex Grey with a wash of watered down Tamiya Clear Smoke (or multiple washes if you want it darker).
catbarf:
I remember seeing online this fantastic scheme where the beards were red at the top and became orange-y and then yellow at the bottom. Looked fantastic.
Dracomancer:
Drybrush Shadow grey, it doesn’t matter if its a bit bright as dullcoat or purity seal (whichever you use), tends to tone down the colour and make it blend into the black better.