External colour scheme - feedback please

Hi,

Just chosing our external colours and wanted to know what people think. We have based it around a surfmist roof! This is our choices:

Colorbond roof: Surfmist
Gutters, downpipe, facia: Surfmist
Cladding: Shale Grey (or Grey Bonnet from Taubmans)
Garage: Shale Grey
Front door: Shale Grey
Bricks: Bowral Gertrudis Brown
Windows: Surfmist

I'm finding it very hard to imagine what it will look like.

Feedback please

What colours for render?

It's a big place so could do with some strong colours.