We have a similar home in a sydney beach suburb. We are in a different position where we have bought ours as a downsized but are just about to restore the old 50s beauty to its former self. We have quotes of around $400000 to gut and change the floor plan which includes 2 bathrooms and a new kitchen and also add internal stairs to the garage and a large deck off the back, lift some ceilings and replace gutters, eaves ect ect ect. Attached are my inspiration boards and what the house looks like now, hopefully in about 4 months I can update you.

My advice would be to get rid of the blind as you won't use it once you have the curtains - perhaps you could use it elsewhere or have it as a spare. You would probably find that without the blind you will use the access more often. I would do full height and full width drapes - an inverted pleat is attractive with heavier fabrics but if you have the light fabric on the top keep it simple. How about putting your sheer lighter drape on the side closest to the bedroom and have the blackout lining behind. This gives softer look in your room. You would probably find that without the blind you will use the access more often. If there is a lot of sun take care with the pure linen cotton and natural fibres as they will rot with light and sun. There are many synthetic linen look alternatives that are less expensive, last longer and have the same look. I feel your room could do with some texture - you could possibly have a subtle self coloured stripe in the drape - or go plain and have the interest in your bedding. If you want to go soft grey drapes I would go for a darker charcocal or midnight blue/ teal colour on your walls which would look awesome with a soft grey linen look curtain and natural bedding. You could introduce soft mustard, peachy pinks and soft apple green linens in your bed cushions.

Have had both incarnations Upholstered and wooden arms. Upholstered are just a better option for when you want to lay down on the couch and get head support.

dark windows can look great in certain contexts, but not on this type of residence. Lighter is always better on these. The problem with the tiled sills is more the window colour clashing with them, rather than the colour themselves. I'd be inclined to change the window colour rather than paint the tiled sills. The orange roof colour should be reconsidered because the orange overload is due mostly to this aspect. Perhaps it may pay to invest in some professional design/architectural consultancy to help balance all the various elements involved - they all need to be working together and be complimentary, and colour will play off adjacent aspects one way or the other and it would be worthwhile for you to get experienced advice and work through options. Best of luck Cheers PD :)