Graying Hair for Duncan

Because I wanted to see if it could be done, really.  :p

Adds graying versions of select NPC hairstyles & beards, with otherwise-vanilla headmorphs that use them.

Current list includes:

Bryce & Eleanor Cousland

Cyrion Tabris

As some of these characters had gray hair initially, I chose what color I thought made sense (based on family), or just looked best.

The graying hair looks better with a darker tint, IMO.

Because of how this was done (basically splitting the hair into tintable and non-tintable chunks), the tintable part of the hair will use whatever default hair texture replacer you may be using, while the gray part uses a modified version of the default texture, with a different .mat.

(I really, really was hoping this could be done with simpler texture and/or .mao edits, but despite the inclusion of a tint mask in pn_har_all.mao, hairalpha.mat doesn't actually use a tint mask)

There are also some small transparency issues where the tintable and gray chunks of hair overlap, but I have tried to minimize them. ;)

vanilla replacers used in the screenshots:

hoarous' Glossy Hair and Beard

ViLiSSa's HD Eyebrow & Stubble

SJC's Vanilla Face Textures Replacements

LotC's Default Eye Texture

Dalishious' True Colors Redux

Ashhawk's Real Pigment (medium lips)