Blue and Gold always looks good.
My brother in law recently cleaned up old volva gauges and installed on a custom made black alloy plate - so I think the carbon fibre look is a great idea. My father and friends get old motorcycle gauges looking almost brand new with a bit of work - so if you can keep the originals - you'll save heaps.
Otherwise you could go the patriotic Green and Gold - have some sort of Australian theme. It's an Australian icon in the boating fraternity (Sharkcat).
Gold hull, Green accent with Australian flag airbrushed to the rear quarter. Just some thoughts.
If you've got some some larger sized photos of the boat (resolution) I might have some time to do some photoshop work with options for you (purely for fun).