Ansett ordered 8 new A320s for delivery from 1988 (HYA-YH) with another 4 being added in 1991/92 (HYI-YL), 6 in 1995/96 (HYN-YO, YP-YT) and two second-hand examples also being leased from 1996. HYB was chosen to wear the special Sydney 2000 Olympics scheme and repainted in December 1996 with the operation taking 2,500 man hours. She wore the scheme until December 2000 by which time Ansett was in serious financial trouble.
I think it is acknowledged that the Olympics sponsorship cost Ansett far too much and provided little actual benefit to the airline. The scheme however looks great and I just recently added this as my 4th Ansett aircraft (along with Electra, 767 and F28).
For the complete history and photos of this frame (and indeed almost any Australian airliner) please see the superlative Aussie Airliners site:
VH-HYB Airbus A320