IMO there's not much that's more 'nautical' than a teaky interior with deep blue cushions. But, as Mark (Copa) says a light coloured material (maybe not stark white) can brighten things up considerably. I've rarely seen strong patterns/stripes that were pleasing to my eye.. but of course that's a very personal, subjective thing.
In the late 70s and early 80s a variety of variously garish plaids seemed derigour - those must be gotten rid of and may they never rise again.
In the late 70s and early 80s a variety of variously garish plaids seemed derigour - those must be gotten rid of and may they never rise again.