The Bricks are OK, if you like them, keep that round feature deck in the brick and render the rest, or stone clad the feature and render the rest, or cheapest of all just paint the rest in a dark warm neutral and render the round feature in a lighter but similar tone. You have the windows to consider. If you changed the colour of them you could also change the overall colour scheme from warm to cool. Although a black and white scheme is current, it looks better on timber houses and in suburban and inner city areas in my opinion. There are lots of different elements to your house which would look more integrated if you chose a warm colour scheme with a maximum of 3 colours. You can even make the bricks work if you paint upstairs a warmer colour to match them and changed the tiles and front steps to wood. Wood integrates everything in a warm colour scheme.

Scallopini is similar to Dune? The dutch gable's (triangle's) would be better in Shale Grey as would Facia and gutters. Monument gutter ok but could be a bit much. Monument to roof and garage door. Monument to window frames as well rather than black? Depends on builder window company. Scallopini to walls. That way really just 3 colours.

I think lighter above and dark below would look good.

Dulux has about 4800 colours available to design professionals, and only about 10% of these are available as sample chips from your hardware store. There are so many subtleties and nuances with colours that are lost with digital images I would not want to make a recommendation online. The only way to make colour selections is to get paint colour swatches, stick them up, and observe them in different light conditions. Your perception and appreciation of them will change at various times of the day. I would not choose any grey for your home as grey is the mission brown of the future. I would choose one of the colours that is appropriate for the period of your home that works with the white window frames and roof tiles. Best of luck, Dr Retro of Dr Retro House Calls