Minimalist, cold colours, almost monochrome.
Friends have variously described the look as "classic" or "old money", which is funny considering our furniture is mostly hand me downs with some Ikea thrown in. Basically: very little furniture for the space (easy in big rooms), no clutter, dark-stained wood furniture and plush, pale-coloured couches (couches are not my choice, I would like to get black leather next time).
We have jarrah floor boards which give every room a warm feel, and high ceilings, so I prefer cool tones for my furniture and paint - luckily the previous owners of the house had similar taste and painted the walls a pale greyish colour. I'm tempted to add some navy blue and maroon as and when we need new textiles e.g. couch cushions and rug. A big, Persian-look rug in a non-offensive main colour with navy blue or maroon highlights would work so well in the living room.
Annoyingly we have wood trim in the living - dining - kitchen space and white painted trim throughout the rest of the house - when we eventually repaint I want to paint the trim white throughout the house. Other than our jarrah floorboards I only like dark-stained wood, no other stain of wood is acceptable to my picky taste.