If you have access to the Amphibian Medicine and Captive Husbandry book, consult plate 13.5. It shows a red eye tree frog with a "skin condition suggestive of a bacterial dermatitis." The picture shows a frog with blotchy skin that is considerably darker than the rest of the frog. If you were to post a picture of this frog I certainly could compare it to this picture in the book. Other than that, the source of the condition would be completely speculative. Chances are it was stressed from the move and has resultantly developed a bacterial infection. Double check your temperatures with others on the Web, you should consider raising the temperature 5 degrees and consulting a veterinarian.
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...the oldest task in human history: to live on a piece of land without spoiling it."
Aldo Leopold (1938)
"Sometimes I think the surest sign that intelligent life exists elsewhere in the universe is that none of it has tried to contact us."
Calvin and Hobbes (Scientific Progress Goes 'Boink', 1991)