What about Jasper for rest of fence and columns of the house? Could even door garage door or just the surround in Jasper also. I think a light colour (like your windows) for the fascia.

I would stay clear of the wisteria/purple/mauve, they are heavy and dark hues of the colour wheel and will make it difficult to tie the entire room together. They also have a tendency to make a room dark as they absorb a lot of light. They are also very difficult to paint over again if you ever sell, as they take many coats to hide the dark hues, especially when painting over in a neutral colour like cream or white, as the colour can bleed through. What about a hint of autumnal burnt orange, a soft pastel teal or a very mellow ocean spray blue palette, again in pastel instead of the darker Victorian mauves etc. I think any of those choices would go well with your darker sandy-brown strip flooring. See example pic below.

I'm not familiar with these colors but try and keep them similar i.e. A blue grey, a green grey, yellow grey etc. that might help a little bit when thinking about your choice. Also I would do the same colour as you use on the render, (bricks) on the weatherboard above the garage or if you aren't keen on that, make it lighter. I would not go darker up higher. I would however do a very dark fence, assume the concrete one on the left. The other option, as it looks like you are embarking on quite a large project, is to change the existing colours i.e. garage door. I would choose a colour for the garage door which matches with the main house colour. Go with your gut! Good luck.

I love your bricks too. In fact I would repaint trim colours the same as they are.