Hi Mark,
Thanks for posting the shots of these amazing creatures.
Like Mike, we get a species of the leaf-tail gecko indoors here as well in our corner
of Sydney and their ability to blend in with the mottled colours of the bricks is
incredible. However, unlike Mike, we are just happy to let them be as and you will
come back a few hours later and they will have moved on of their own accord.
And as Mike mentioned, if you do try and move them, they will scream!
If I get a chance, I will post some pictures some time.