All the suggestions above are perfectly good. However, when you have a house that is entirely painted, the options are so endless that it's easy to get stuck. I'd advise either finding photos of comparable homes in colors that you really love, and reproducing a similar palette on your home… or upload a picture of your house to a colorizing site, and play around with various combos. Sherwin Williams has a Color Visualizer that is decent. I don't mind a white house, but feel that the black trim is a bit harsh. On the railing especially- it feels like it is outlining itself too much. Reduce the contrast between the body and the rail and it will enhance the house rather than overwhelm it. You have a lot of choices, so just experiment and go with what resonates with you.

Thanks for all the great ideas everyone and sorry I didn't explain the polycarbonate a bit better :) This is along the lines of what we'll be using... http://www.psp.co.nz/building-brands/corrugated-sheeting/suntuf-polycarbonate The area is an absolute sun trap and we're hoping to use it as an extension to our living space, especially on rainy days! I've just sent my husband out to get a few pots of different stains for is to try - darkest brown (cedar) and a lighter brown (rustic oak) both by Cabots + the black we already have. Hopefully we can decide between one of those! I probably should have mentioned we will have black aluminium pool fencing running along the top of the second retaining wall - so the real question is do we keep everything black (pool fencing, horizontal fence, retaining walls and pergola) or do we go with a dark (or even light) brown for the pergola and retaining walls.... We just keep going around in circles at the moment. Decisions, decisions! Thanks again :)

Thanks for the suggestions. I will definitely try to attach rounded tiles where I can to make it more Spanish. Also love the idea of attaching Spanish style tiles to fronts of steps etc. I will definitely do bright contrasting front door, and I really like the window flowers idea to break up all the walls. Landscaping is my strength, so got that sorted, and will begin that first. There is too much focus currently on parking spaces, and not enough on outdoor living. What do you guys think of this colour. I am happy to paint over the aluminium windows with whatever colour would suit best. Thanks very much.

My vote is for the wash but not in bright white and after some selective knot primer in the same tone. You are going to want to selectively primer down about 2/3 of the knots (use a dark white tinted primer), and use a dark white / brown toned off white instead of bright white so the beams still give you dark white on bright - that would be my vote. Consider something like bm stingray tinted primer and wash on the beams. You can add glaze for more working time or put down dropcloths and use water to cut it into a wash. Test it on some other raw wood that has had tannins develop for a few years. Then put it against your white wall - your husband will get the contrast and wood grain but you'll get the quiet palette you were hoping for. They both will have architectural depth and interest.