It's refreshing to see nautical, navy BLUE. Everyone is saying the same thing for the most part - just introduce another color, definitely bright (yellow or orange IMO) and it will make it more current. What I really like is how your style will withstand the test of time - and with minor updates now and then it will always look fresh and "current".

Have you thought about getting slipcovers made? If you wanted to go with a cottage look white or off white would look good with your rustic fireplace. Don't be afraid of the white, slipcovers that are made well will last a long time, and can be washed even bleached. I have had mine for probably 9 years now. Love that you can wash them. I would skirt the bottom of the slipcovers. I think it would really transform them. You could bring in some blue accents with pillows, etc. Some pictures on your wall with some ocean blues would look nice with some rustic touches like antlers, shells etc.

This made me laugh: http://www.theguardian.com/environment/2016/jun/09/seagull-turns-orange-after-falling-into-vat-of-chicken-tikka-masala I couldn't copy the picture, but it's hilarious.

The setting is quite tropical, so a darker scheme with white trims has such a tropical holiday feel. You may consider using a concrete face brick for the lower section. This will be modern, and eliminate the need for painting, while still creating contrast with the upper level. Try a colour for the main house like Resene Evolution, or Quarter Evolution, both would be perfect for your style of home. The colour scheme that we recommend for you is our Rainforest Board which includes everything you need to bring the look together! https://www.bodoboards.com.au/collections/paint-concept/products/rainforest-paint-concept We would love to see updates as you go.. its going to be great!