It depends. If you’re going for a classy look stick with either bronze, silver or gold . If you’re going for a more out their look pick a stand out colour, turqoise or fushia. Either way a chunky necklace, cuffs.
skinny strappy gold & blue heels (like erin mcnaught wore to the 2011 logies) and one long gold cuff
not sure if i comments before worked, but pastel, soft leather clutch (the envelope ones are lovely), simple earrings, colourful/bronze cuff or necklace or bangle, open toed shoes- nothing too heavy