Take some pictures of the container they were in, too, when you get a chance. Is there any leaf litter or any other hiding area? Does the substrate look moist, or is there any way for them to hydrate if they are dry( like a shallow water dish or water droplets on the plants/ container walls?)
How are the other leucs doing as well as the azureus and cobalts and are all being housed the same way?
Bryan
*Edit*- what kind of lighting are they under, do they get any direct sunlight from a window nearby, and how warm is the exterior room temperature? Frogs, especially young ones, can overheat very easily and ideally should not be exposed to temperatures over 80 degrees, so watch the temperatures closely as it heats up outside.