I'm in the same boat as your wife right now. I've been looking for b&w images that I can use for a tattoo myself. I have found tons of lizards, no geckos. I've been looking in clipart and stuff I've found from google searches. I have one particular picture that is sort of a gecko pic which I think I'm going to use. My plan is to bring that pic with a real pic of my gecko and have the tattoo artist make one up for me.
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~*Chibi*~
Sir Iggy ( 1.0.0 El Salvador Blue Iguana), Ryo-ohki, Orion, Bud, & Finnegan (3.1.0 crazy kitties), Rosebud (0.1.0 cockerspaniel), Trixie and Kayko (0.1.1 leopard gecko)