If you are looking for an Australian native groundcover with masses of bright coloured flowers then Brachyscome cultivars are a great option.
The daisy-like flowers come in a range of colours depending on the cultivar.
'Pacific Reef' has hot pink flowers with yellow centres
'Pacific Coast' has large pink flowers
'Pacific Breeze' has mauve flowers
'Pacific Sun' PBR Name: Rambosun has yellow-orange flowers
'Pacific Cloud' has white flowers