Update:
Lucky has no appetite, I applied a thin coating of neosporin this morning, and Lucky is currently sitting in a pedialite bath. Lucky's coloring has not changed from that in the previously posted pictures.

Ginger, you area lifesaver (literally!), thank you all for your support and advise.

I will be contacting Dr. Frye tomorrow. There are what appear to be small chemical burns near the hind quarters (3 small sores).

I still feel so terrible. I think I will keep Lucky out of the Viv/Terrarium until those sores heal.