Jen, they're lovely frogs. Thank you for sharing the photos. These are nocturnal frogs - they don't need daytime light.
Secondly, these are not reptiles. Unfortunately people tend to (wrongly) lump amphibians into the same group as reptiles when talking about them. From a scientific point of view, they're a completely different taxonomic class, just as mammals are a completely different taxonomic class. Humans have arguably more in common with reptiles than frogs do. For example, you have a 4 chambered heart. So does a reptile. Frogs have a 3 chambered heart like fish.
They may require a few days to get used to their new home. Milk frogs can become very bold though and will usually take food from tweezers after a few weeks.