This area is well shaded already and a dark colour on the walls and floor would suck the light out further. The rendering effect looks rustic rather than a crisp finish (unless there is another coat to go on yet) so not painting makes it look unfinished. I fess up I think grey is over used, there are plenty of other neutral colours out there so suggest Dulux limed white (note the actual chip is a warmer light taupe the website shows it as grey, duh!) for the walls. This will still be a nice contrast against the window frames and compliment the darker slate tile you want for the patio. You appear to have plenty of greenery and you could add a pop of contrast colour with a large pot (red, purple?). All the best with your project.

Biggest Thank you to everyone who has commented and given me such good practical advice for updating my little front patio/porch area. Before I depart again and forget to update? This is how it looks, I am probably at a later stage going to work out how to add a wider sill as suggested, however it does look so much better than before. Such timely advice has given me the motivation to get it done. I have left the roller shades on one side just to allow a bit of privacy from the neighbours and wind/sun. And one day will swap the large couch for something more suited.

Our house north frontage, it is so lovely in winter, we have a small porch/verandah, use it all the time .. You have the gums for summer shade so you may not necessarily need a roof. I like Dohramei photo ideas as well. Nice metal garden furniture with removable cushions

I think the wicker chairs give it away a render. Also a lot of light coming through for a dark sky. Just looks a bit off.