Retexture them to use an emissive texture with glowing eyes like the dark one portrait does.
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Considered easy altering of the unit textures?
http://static.sc2mapster.com/content/attachments/15/252/Screenshot2011-04-17_09_16_21.jpg
For my public assets look here!
http://www.sc2mapster.com/forums/resources/data-assets/46733-the-assets-of-evil/#1
admielke AuthorAnyone know how to attach glowing eyes to the Civilian? I have attached ShapeSphere with a cyan tint to the Civilian actor, but it does not stick with the actor's eye location. My guess is I'll have to copy the Civilian model and customize it with the glow through some kind of editing software.
Update
After doing some tweaking I have come to like this way, but if anyone knows how to do it better please reply.
Thanks