Back from no-internet land!
To add to the recent conversation: I'm not 100% certain that the mosaics of the Evanuris do actually depict them as being bald. I find the mosaics to be quite crude, stylistically, but the patterns of the tesserae around their heads do suggest hair to me.
Elgar'nan seems to have a centre-parted updo, like he's standing above a very windy New York subway ventilation grille, and his long, straight hair is blowing upwards.
I admit it is harder to see hair on Mythal, unless the darker-coloured tesserae at the centre of her halo effect represent a (bad) haircut. Can I say that I like that she has saggy boobs and a pregnant-looking belly, and also that she holds five white flowers. Do you suppose they represent her five children? She is the all-mother, after all.
Falon'din might have a very thick head of hair like his dad, but it falls downwards on either side of his head instead of flaring upwards like sun rays. I find it similar to an ancient Egyptian wig.
The tesserae around Dirthamen's head seem to suggest a hood to me. Considering that he is the god of secrets and hoods are very rogue-like accessories, I suppose that is not really surprising. And, as we all know, once you put on a hat in Dragon Age, your hair disappears. ;D (Also,I'm not sure whether he is holding his hands over his mouth like the speak-no-evil monkey, or puking in his mouth. It's hard to say.)
Andruil's hair seems to have taken after her dad's, inasmuch as it floats straight up above her head. She does not have a center part, but she does have some nice highlights on her left side.
Sylaise wears a pretty crown of leaves or petals, which may be holding up a crown of hair as well. The rest of her hair falls about her shoulders. It's reminiscent to me of some ancient Roman women's hairstyles.
June seems to be wearing a hood-mask type of thing so his hair might all be hidden by that. Or, he might have a kick-ass mohawk. There are a lot of lines of small tesserae sprouting straight up from his head that suggest as much.
Ghilan'nain possibly went for the Elgar'nan/Andruil troll doll hairstyle, or she might have a side ponytail draped over her right shoulder.
And Fen'Harel is a wolf, so he is absolutely covered in hair.