I'm thinking replacing the gable with cladding maybe in red rock colour (rusty red) and replacing both side fences with horizontal fencing in the same colour. I'm trying to modernise the place but the blue was a similar attempt around 8 years ago so not too confident in my choices.

Cream always looks good with green, maintain the same green for windows & door. Having said that you can choose any colour by repainting the gutters & fascia etc. Get lots of colour swatches & hold them up to the roof (from a distance) to see what looks best to you. Then get some sample pots & paint so you get the proper effect of the end result. Look around at other painted homes & magazines etc, to get an idea of what you really like.

Look how wonderful your dark window frames and dark outdoor furniture look against the home. You only need one more colour for both the gutters and the garage door. I would choose basalt or monument Colorbond.

If you want a light render and you’re looking at Surfmist for the garage door then use Surfmist for the whole thing. You don’t want more than three colours inc your bricks and monument so that gives you one other colour for everything else.