We are from Brisbane & trying to achieve a Hamptons style (renovating exterior on a 30yr old home): exterior cladding in a light grey (Dulux Miller Mood), whites with windows, posts, balustrades & trims – timber decking. We have a roof that is very visible as it is a house that is 1 story on the front half and 2 story towards the back with the roof line slanting towards the street. I had always thought that dark colours receded and light colours popped so thought that Colorbond Ironstone roofing would made the white trims and miller mood colour scheme pop and the roof recede. Is this incorrect, and should I be considering a lighter roof? I want the roof to disappear as much as possible?

Any suggestions on garage door colour - would white be too much?
As a side note I was thinking half strength Dulux Equanimity for the from door (an ocean grey green colour) but am a little nervous on doing this? I have a lot of the interior accent colours in these ocean green shades.
Thank you in advance,
Sherri