I have previously owned two whites tree frogs, however they both passed away. for my two year anniversary my boyfriend bought me two new frogs. i have everything for them, the tank, the light, the heating pad, water dish. one just recently has turned purple and has been very lathargic. before i seen it turning purple it was doing this odd thing with its mouth, like opening and closing it as if it maybe were choking? it really freaked me out. i love my frogs as if they were any other pet to someone else like a dog. and i dont know what i can do . the other tree frog i have is perfectly fine and green as can be! so could my frog possibly be sick?