Thanks to Bagginsbill and Fisty, I think I have figured out how to get the effect I want using a bitmap and hsv node. I have this simple style in the pipeline and for this set I am concentrating on making the hair texture a bit streaky and keeping the shine within limits that can be considered natural. The hair styling tool is not my friend yet, though!

Poser 11 Pro, Windows 10

Auxiliary Apps: Blender 2.79, Vue Complete 2016, Genetica 4 Pro, Gliftex 11 Pro, CorelDraw Suite X6, Comic Life 2, Project Dogwaffle Howler 8, Stitch Witch