I have just taken a couple more pictures (excuse the untidy house) from the stairs. As you can see it's an open plan area that isn't that big but very high ceilings also in wood (Macrocarpa) with dark wooden beams. The house is surrounded by bush so quite a dark house. I initially considered a darker wood similar to the beams but not sure if that will make the house appear smaller / darker...I'm really not sure what to do!?!?!? Thanks

Thank you all so much many of you suggested darkening the ceiling and leaving the beams the way it is to avoid too much work. What color did you guys had in mind?? isn't a lighter color suppose to open the room? Talianko and Hyde Evans and Shauna? ( I preferably will love a rustic lighter wood look, and the beams but does sound like a mission to get it done as sanding varnish on the ceiling might take me forever but if I get brave enough I might do it Sstar. Brio I do so want those curtains gone they are shocking :)you haven't seen the outdated blue couch yet... but I have to decide in the colors of the walls first :) I am inclined to have a rustic look for furniture... more like farm style and I also like wash off colors...my next vibrant color that i want to add is yolk yellow ( don't roll your eyes that will be in a cushions or a vase a picture) I am very impressed with all your answers and thank you all so much for taking the time to help a girl out :)

It depends on the species of wood (I.e. How hard or soft) and whether or not the ambient temperature can remain as stable as possible. What you caulk and paint in warmer weather may look great now, but when it begins to get colder, the wood begins to shrink, and the caulk will begin to pull away. This will look worse than if you didn't caulk at all. My suggestion is to use a caulk like the brand called "Big Stretch " in an attempt to avoid this.

Thank you everyone for your ideas. We are about to paint the walls an off white - double merino, and thought we might paint the doors and pelmets the same and now after reading your comments I think we will leave the timber beams and paint the ceiling between them the same as the walls, and will consider the bar supports too. What do people think about painting ceilings, doors and walls the same colour?