I’m worried my white tree frog is sick, Help?

[Amarithewhitetreefrog]

Im new so i’m not sure if this is where I should be posting this but, today I Couldnt find my white tree frog, and it turns out she was under neath her perch, huddled into a corner, so I flipped it just to make sure everything was fine, and she has appeared to changed colours from a dark green to a very dark brown and now she has noticeable white spots on her back, usually she sleeps up in her fake leafs but now she didn’t, and i’m worried she’s sick because of the sudden behavioural change, the temp. Is 70F and the humidity is about 50%