FWIW White's tree frogs actually don't do a whole lot of croaking. They need very specific conditions to breed which your habitat probably won't have. I have a female and 2 males. I hear the occasional croak but not much and they don't show any interest in actually mating. They bark when I annoy them, such as moving things around in their terrarium. If you severely startle them--such as rudely grabbing one while it's asleep--they scream.
White's tree frogs are cute, personable and one of the very few frogs that don't mind gentle handling. You do want to wash your hands afterward as their skin secretions can be mildly irritating.
They come in a few color morphs. There's normal green, baby blue, plum, snowflake and honey blue-eyed. They also change colors like chameleons according to mood, temperature, humidity level and lighting. One of mine goes from light green to dark purple at night when he is in ninja mode stalking crickets.
A good source for them is Sandfire Dragon Ranch. They specialize in bearded dragons but also sell a variety of frogs. Sandfire Home - SandFire Dragon Ranch
I keep mine in a 18" W x 24" H x 18" D Exo Terra terrarium as they prefer a vertically-oriented cage. That's enough for up to 4 frogs but I keep only 3 so everyone has plenty of elbow room. It has an integrated hood with 2 sockets and I have a UVB bulb in one, a low-wattage heat lamp in the other. They don't need it super warm--low to mid 70s are fine. They do need humidity so I have clay hydro balls in the bottom, covered with plastic mesh to keep them clean. This creates a water reservoir. On top of that I have coconut dirt which stays slightly damp. That is topped with undyed New Zealand sphagnum moss. I periodically dump water into the substrate. The frogs can burrow in the moist moss or dirt as desired. I put live plants in (bromeliad, jade plant, African violet, nerve plant, bamboo, phalaenopsis orchid) along with earthworms and isopods as a cleanup crew. I don't have to poopy scoop at all because the microbes, plants and bugs quickly break down waste. They have a water dish for soaking, a fake coconut hut for hiding and climbing branches and ledges for hanging out. All I do is add 60 crickets once a week. There's a bottle cap filled with cricket chow and the crickets live happily until they are eventually hunted down over the course of the week. Sometimes they even breed and I spot pinheads. I mix it up with nightcrawlers, dubia roaches and mealworms. Once a month I dust the crickets with calcium/vitamin D3 powder.
These cute, chubby little guys are great, charming and easy pets. They sleep during the day and come to life to hunt bugs and soak in their "spa" at night.