Some of Virgin Blue's B737s (with Live2air, Premium Economy etc... unlike Pacific Blue's product) are painted in Pacific Blue colours for advertising within Australia. Perhaps they're doing this as well with one or two of the new E190s?
But New routes (like Canberra to New Zealand) sound interesting, particularly when there's wet leasing with Virgin Blue aircraft and crew thesedays... That way they do not have to train any New Zealand crew on the E190... All part of the redeployment.