This is Lichenomphalia chromacea, which has temporarily disappeared from the pick list (so I can't confirm it until it is restored to that list) but you can find the sightings at https://canberra.naturemapr.org/species/7690. For Lichenomphalia umbellifera (previously Omphalina umbellifera) see https://canberra.naturemapr.org/species/7693.