I would consider a single color for the house and trim. This will make the triangle a non-issue.

https://nestingwithgrace.com/wood-garage-doors-and-copper-exterior-lights-over-doors/

...or just paint the roof line trim and front door...

Here's all green just for fun:

I would select a gray stain for the siding and a natural finish for the garage doors.

This house does not need corrugated iron or stone. It’s best features are its simplicity and strong shapes, lean into those.

New simple wood front doors

Wood garage doors (though I would probably stick with the existing painted the siding color)

Remove all traditional elements like the coach lanterns and replace with something simple

Let the driveway deck age naturally

Stain the wood driveway railings with solid color stain to match the siding. They aren’t a feature

Think about the house, where do you want to direct people? The front door? If so that is the feature and everything else should be secondary.

^^ agree that simple is best and new front doors will be a game changer

It looks like an 80s contemporary, which tends to have a hint of MCM inspiration, and honestly I love it. Lean into it rather than fight against it. Make it look more modern, starting with the front doors and garage, and consider a dramatic dark paint color.

or if you wanted to do white, that could look good too:

I agree with Hallet and please change those front doors they in no way suit the house neither do the antlers.

I love the dark and moody all-one-color option!