Hey, mate. I can *almost* guarantee that, in our neck of the woods, it's likely to be and Asian House Gecko in his day clothes. I have ones that hang out around my front door that are dark chocolate brown in colour! They look amazingly different to when you see them in the house at night on the white walls!
yeah, mate. 3 inches sounds about right for an adult, and yep, can go from very dark choccy brown to tan, with lighter stripes on the sides. Then, at night, they go that white/pinkish colour.
You are the one who says you are experienced and you are the one that saw it!
how can you expect a bunch of people sitting on there computers to ID it on the crappy description that you gave especially when it takes nearly 3 pages before anyone knows where you live!