Thanks everyone for your comments. Here is an example of the steel blades we are thinking of. I think monument (as per house) would look good and as the blades are narrow, won’t look too overpowering. I think the greenery of the garden will pop against the monument. The timber-look cladding is Decowood in chestnut colour. I want to limit this cladding to top leftcwyadrant if the

shale grey colour fence ?or iron storn colour ?

It is difficult to tell exactly what colours are there already, but I think you need to consider what kind of visual impact you want the fence to have compared to the rest of the exterior. If you choose a colour similar to the house, the effect will be a unified frontage and the look of a larger property overall, but giving the house itself less impact. If you would prefer to create a visual break so that the house retains it's dominance on the block, a darker, cooler colour would be best for the Colourbond fence. I personally would recommend blending the fence with the gate as opposed to creating a contrast (which can look busy), but it comes down to personal choice in the end. Try holding a colourbond chip up to the house from the other side of the road and you will get a vague idea of what I am talking about! Good luck with it all!

Personally, I think it's absolutely fine for the fence color to change as you enter the gate into the back garden. Since you can't see both the front and back fences simultaneously, it shouldn't be too noticeable. Plus, it's your space, so go for what makes you happy! If you're looking to enhance your outdoor area even more, you might want to consider adding some https://www.scottsofthrapston.co.uk/ —they can really elevate the vibe of your backyard.