Imagine that -- a grey on grey house looking boring haha ! Without being too critical , it looks like a 1950's rendered house plonked on a block base that has been painted grey or charcoal .

Just my opinion , but the upstairs looks too uniform , with all the windows the same . They don't really match that downstairs 'horizontal' window , but it will sort of work , assuming the window frames/trims all match ( same profile , colour , etc ) but if its not too late , I'd seriously consider making the middle of the 3 'front' upstairs windows quite a bit larger , maybe 100mm wider each side , maybe also 100mm shorter but keep all 3 windows top aligned ?

Then I'd do the upstairs render in an off-white , something along the line of surfmist , as it has a bluish tinge , which will tie in with the grey , but it isn't grey .

The garage door/front door combo in wood is always my favourite , and I know those pics are just designs , but add a more interesting front door -- definitely don't just carry the horizontal wood of the garage door through . Go with the same wood/stain , but have maybe 3 off-centre little square windows ( to sort of reference the other 'groups of 3 ) , or glass ( non-opening ) up one side , with a narrower door , as it looks quite wide .

Downstairs colour you can go with the mid-grey and charcoal , although I'd love the 'column' done in a stacked stone -- a schist or similar -- even if it was only the bottom 800mm or so -- although the stone works best with lighter colours , so maybe you'd 'have to' do the coluns in your mid grey , the rest downstairs in the lighter grey , upstairs in the even lighter off-white -- combined with the stone , and the cedar or similar doors , its going to look at least $50k more , for $20k or less ( depending on how far along you have gotten obviously ) . Use colour , but also imaginative window placement etc , to add interest -- others may disagree , but I don't think that will make your place look too unusual or specialised ( harder to resell , because we all do at some stage ) , and will look cvlassier , more interesting .

Of course , budgets and banks may not allow that , and/or you may screw your nose up , but thats my take .