The new hair colouring options are nice and all (although the colours are all out of whack now contrast-wise), but it's a little odd that the facial hair options don't get affected by the hair highlight. While with some hairstyles the highlight seems to represent a dyed part of it rather than a natural highlight, with others the disparity between the facial hair and the hair-hair can look jarring. Greying does affect the beards, so why wouldn't highlights? NWN2 had that, for example. If you want just the hair or just the beard to be highlighted/greyed, there could simply be a toggle/separate opacity slider for it (as long as the abysmal CC UI is at least somewhat improved so that it's not a single awkward-as-all-hell panel).
Or, as an alternative, greying should just have the whole array of colors available to it too (there are already mods for that). Might as well go all in if we already have all of the hairstyles available for both genders (although Nere's hairstyle is now conspicuosly missing, and so is Lae'zel's...).