Thanks for the comments, they are amazing creatures & out of the dozens (adults) I have encountered in the wild all but one have been so calm & docile.
This one has a nice dark olive colouring which is the common form, the lighter sandy coloured forms are not often seen in the wild in this area yet a couple of hundred Klms away in south west Qld they do seem to be lighter on the average & there is also a difference in head scales.
Regards, Paul