This is a similar home. Does the architect's response help you? "Yes the soffit is painted ( Resene Bokara ) to make it similar to the cladding. We did it this way in order to emphasis the sculptural form of the house - if it was white it would have broken up the form somewhat. I think it depends on what you want to achieve, if the line of the joinery is at ceiling level then it is good to have the ceiling and the soffit the same colour in terms of how you experience the interior space. If the exterior look is more important then the dark soffit would probably work better."

I don't know how hot it gets in Auckland in summer (I've only ever been to NZ in winter!) but if it gets hot, then go for a pale colour. Dark roofs should be kept for cold places!

Without knowing any more info , I'd say its near impossible for anyone but you to know what colour/s to choose -- do you want the house to blend in but have its own style , or do you want it to stand out ? What colours are your main furniture items and even kitchen etc ? For xxample , if keeping the beige walls , how about doing the eves and gutters and garage door in a tangy ( bright , but not glaring ) orange -- this would work with the existing colours and not require a complete repaint . BUT if your kitchen was mainly various shades of , say , green and teal , and your lounge suite and duvet covers were mainly blue hues , that may 'feel' funny , clashing with the exterior ? Of course , blue and beige exterior may not work with the brown aluminium , as youve recognised . Another option ( a bit hard to tell from the pictures ) is that a light grey ( repaint the beige ) with mid-charcoal base boards may work with the brown aluminium , then a bright colour on the gutters and front and rear doors to suit -- anything from sea blue to bright yellow , orange , red , even white or off-white would probably work .

Personally , I think that to give advice , you'd need to supply more information -- what the neighbourhood is like , your favourite colours , the plants in your garden , and the likes . I quite like the colours there , but I'd do the front door , the gutters , the window sills and those cap pieces up the pillar supports in an orange or teal or red or similar to add some Wow and excitement , but thats just me .