I agree with Amanda and RWalton: Definitely black but I too question your use of a picket fence with a 60's cream brick - it will never read as 'right'. A paling fence, a metal slat fence, a combination of the two; but not pickets - they are from a totally different era.

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!

Your correct , the colours that you have painted do not compliment your home. If you want to use the tranquil retreat, and make your home more 'modern', I suggest repainting all the red trim on your home and fencing in a charcoal colorbond paint. Look at your neighbours roof in the photo. This compliments the fence colours more than the burgundy. If not happy, with changing your home, yes repaint all fencing and wall in classic cream.