We never really saw a good one, though. There always seemed to be a clear sky except for clouds low on the horizon, and I realised that's the opposite of what is needed. The sun needs to shine up from below, onto the underside of layers of clouds, to produce those spectacular sunset colours. I learnt instead to appreciate the subtleties of the gentle tints that we had to be content with. Here are three "not really a proper sunset" photos, taken as the sun was going down.
Port Macquarie:

Port Stephens (I love how the sun appears to be smiling in this one):

Stockton Beach:
