You should totally incorporate some burrows or something for them in the viv. Whenever I found them on Isla Colon, they were always associated with crab burrows. They liked to zip down them if I got too close.
Amazing looking frogs! Love the tank idea. Surprisingly the Blue Jeans I have in 26 gallon tanks are breeding better for me than the pair I have in a 75 gallon. A lot less shy as well. Kind of the opposite of what I expected.