Yea, I think you may be right about that. I didn't realize the alien texture stops at the neckline. Still seems weird when all the other tattoos work just fine. I don't see why they would be using a different texture path, as they all look basically the same.
I've noticed the eye shadow tattoos, basilisk and flair, aren't available to my trill character. Is this an engine limitation or something? I wouldn't think so, since most of the other tattoo options are available. Would be great to have these available to all races!