@jactheshe, it would be very hard to imagine. Even digital photos of the colours together can look so different. And depending on how your house is situated & how the light plays on it, that changes things again. I was looking at a picture online of a house using woodland grey with colorbond dune. The dune colour looked completely different to the colour card on the charts. If you have some large lightweight boards around, I suggest painting them out with colours you're considering. Or getting a large sheet of foam core from office supplies or sign companies and using that. It would be light enough to attach temporarily on the facade & give a better idea of which colour works. That way the angle how the light hits the colour is accurate.

Here are some colour ideas... the top right is my home with colourbond "Wallaby" on the gable and colourbond "monument" down pipe.. wallaby is a brown undertone grey. I used it full strength (in dulux) however you can reduce down to 1/2, 1/4, 1/8 strength etc... as you can also do with the other two colours below... I still suggest test pots first..

love the idea of rammed earth but would use it like reverse brick veneer clad with insulated steel siding

Thanks @siriuskey. We had the same thought, but our builder said the frame style moulding is for interior use only and would perish in 2-5 years in the full sun on the front of the house. Perhaps there is moulding that is suitable for outdoor use... I do like the look. One of our neighbours has done it (blue-grey paint, white window frames) and it looks good. We have done the kitchen window in the back as an experiment; it is undercover and out of the sun though. I like the grey idea, but our neighbour's house is shades of grey (not like the book ;) and we didn't want to be too matchy-matchy. We might have another think about the paint... thank you for your comments. :)