Thank you all for your contribution to this post.
I have decided on the ultrasonic blue with black interior. The reason for the ultrasonic blue over the black is to distinguish from the IS250, which I dont believe comes in ultrasonic blue. Also, the ultrasonic blue is the original colour on the IS-F. I would have loved the sandy white leather for the blue but I have 2 little children who like to "walk" around on the car seats.
I am picking mine up next Wednesday night. According to the Perth dealership, I am the first customer taking delivery in WA, Perth.
Cheers,
D