Thank you to all for the wonderful feedback. I didn't intend to paint the walls blue rather a taupe/brown - the De Sousa home is a great example. Since publishing the photo and the question - I have viewed many fabrics in many shades of blue and came to the conclusion blue is probably not the right choice. The photo looks beautiful but have moved to silver/grey with plum purple walls. But keeping the padded bedhead with demi lune side tables, an occasional chair in far corner and I already have the perfect bedside crystal tired lamp bases already. Again, could go very wrong with purple but I think I've found the perfect colour here in Australia. There are some stunning fabrics available in the silver/grey tone and I think it would well in the bedroom. The starting point funnily enough in moving to silver/grey was stumbling across the most gorgeous drape fabric. Then I built the rest from there. Now it's down to making final selections. A frustrating but fun process. Can't wait to see end result. Fingers crossed it all works out! Thank you once again - this site is amazing and your feedback is most helpful.

Thanks Anne and I will look at pale grey given the maintenance considerations. I have already paid for a colour consultant who was great but the Reckless grey she suggested for the house render and basalt gutters/fascia and front wall were too grey when we had the render samples put on and while it had a modern look, it was not giving the beach/coastal feel. I will head back into our inspirations paint store this morning to see if I can find the warm grey colours that have the most similar colour make up to Dune, and go from there. Anne you don't happen to know the dulux colour most close in composition to Colorbond Dune so I know where to start? Thanks again and I would love to hear from anyone who has got a dune roof and hear if they tried light coloured gutters and what render colours they have used on their walls.

Taubmans chilly water (more green) or misty rain (more blue). i'm sure there was a design dilemma post from a while back that gave the Aussie paint answer to this question. Hopefully someone who knows will see this and link it.

Do you want modern or classic look. China white for classic it changes from grey-to light greenish colour I have it in the same facing room, or for more contemporary try Big white from Taubmans , it's a white with a bit of grey in it very soft. With your grey sofa I would stay away from darker greys and north facing room can make it really dark in the afternoon.