What's the reason for wanting to change?

Just noticed you don't want to change the siding, so forget about sage green suggestion. Photo below shows wood garage doors that echo front door with pergola overhead. You could clad the pillars in same wood if that works on Cape Cod with salt air. Also paint/stain the porch the same buff color as your stone. The pinkish tones don't do the house any favors.

Shingle style home drive court to entry elevation · More Info

From your photo, I see a huge double garage that dwarfs the house itself and a huge expanse of driveway. The best thing you could do is hire a professional garden designer who understands native grasses and larger plantings that work in your location. That means you want to pull the eyes to the house side. So dramatic grasses and shrubs and some hardscaping could do that. You do have attractive garden beds but the hodgepodge of rocks doesn't showcase the garden beds very well.

Family Style Beach House · More Info

Curious as to why the stone (I think you're calling it brick) stop half way down on either side of the garage doors?

Figuring out what to do about that situation would be step one because all the paint color answers are in that stone. E.g. the current red trim color makes no sense. We'd quite literally pull a color from the stone work for the trim making sure it hamonized with the roof.

Just paint burgundy trim to white. Paint the foundation and porch the same brown as the roof or so. Everything else is nice.

If you want something to pop, pale sky blue for front porch ceiling. Old-fashioned look that is trending big time and would look fantastic with your house's porch peak.