Has anyone seen anything like this before? There's no brown in it whatsoever!

I think it belongs to Rosie. She had the heaviest load of hookworms, and she hasn't been interested in eating. I suspect it's the medicine that caused this green stuff to occur. Her behavior doesn't seem to show that she's in any pain or discomfort.
I'm going to take her to a vet--a different one that someone recommended to me at a show. Should I consider this an emergency or can I wait to set an appointment?
and here's a recent picture of her:

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chickabowwow

3.2.3 leopard geckos (Rosie, Locke, Lisa, Caesar, Tommy)

I hope it turns out not to be too serious. I've got finals coming up.