I looked up Wind Spray. The stripe is an interesting idea but may not work as the panels are broken up so much. Would you like to make it stand out or blend in to the overall shape of your house?

Lindy,
Why dont you do a computer image of the outside of your home like you can do with digital decorator and play with some schemes.
You would instantly know if you like it or not!!
Otherwise as Luke suggested, you need to decide if you want to contrast or blend??
I would certainly start off with a blend, as changing it to a deeper colour later would be far easier than trying to go back to a lighter colour if you decide you don't like it.
Deep Ocean can look stunning with Jarrah but now that you have Monument I think you really need to stick to Windspray if your window frames are that colour otherwise I feel you will be introducing too many colours and you will spoil the elegant look of the home.
Cheers,
Barbara

Hi Lindy,
Colorbond dune on matrix looks very good, with jarrah/merbau wood look garage doors, as we have just done our house, it has shale grey roof, woodland gutters and fascia and aluminum window frames.
Sam

So the roof is Monument and the Window Frames are Windspray is that right? Apparently the exterior colours theory is 60% Primary colour, 30% Secondary and 10% Accent colour. So I think maybe the brick and the roller door is the secondary colour 30%. I would do the 60% in a neutral or light colour and Accent colour of 10% could be the Windspray around the front door. I am using Yarrongobilly Caves on Matrix at my front door which is a close match to my Monument Roller door 30%. 60% is white. I'm still looking for my Accent colour 10%. But my roof is Shale Grey as are my window frames. Not sure if they are considered my 10% or not.

Dulux Heifer around the garage & porch, Dulux Namadji to left hand side of external wall. Fresh taupes,2 colours,keep it simple. Hope it helps!

What are the panels that your house is covered in and are they painted? The render on my house needs replacing and I'm wondering whether I could clad it instead.

molskidoo - I am pretty certain that the product used is Scyon Matrix by James Hardie. It is a fibre cement product. Similar sheets of fibre cement are produced by a number of manufacturers. Fibre Cement generally does need to be painted but there are alternatives that are left unpainted such as CSR Cemeintel Barestone which comes in grey, or Equitone which has a variety of colours. Provided your render is still waterproof you might be able to set up a ventilated façade which would also provide thermal efficiency advantages. Render will almost certainly be the cheapest alternative.

Well here it is. Thank you to everyone for your comments, we had to make a fast decision as we were going away and needed painters to finish by the time we got back so we could move in
We went with shale grey outlined in monument and monument across small front section and door to tie in roof. We are very pleased with result as contrasts nicely with brick and garage door

Looks great!