Hi Scratchy
these are my Western Australia Western Blue-tongues (Tiliqua Occipitalis). I believe the South Australia and more Eastern specimens are darker, usually dark brown on a lighter brown. The Western Australia ones are usually dark brown on a silver/grey base. Either localities can have very narrow white streaks edging the dark brown bands and some white streaks running through the centre of the bands which looks really impressive.
They are nice. I'm waiting for some from WA . They look similar to your 2nd last one.
I've noticed WA ones tend to have 5 body bands where as SA ones usually have 4
main bands.
ok is this the norm with westerns tongues,was originally very dark,almost black along with anothers,but the others turned blue like 2 more of its siblings but this little ones is getting pinker by the day