No shutters since the windows aren’t the right size or style for them. I’d go medium gray to charcoal for the shutters when the time comes. One color option that would work nicely with your brick (glad you’re not painting it) is a gray/green, if that would appeal. Paint the garage doors the same as siding.

I think a blue gray would look good. I wouldn't go too dark. I would also paint the garage doors that color. The white is uninspiring. Your roof looks gray, so you have a lot of options like the green shown above. Yellow is one of my favorite colors, but the yellow you have is too assertive, so as you said, tone it down if you do yellow again.

@chloebud Thanks! We did consider green because it can look good with brick, but decided probably not. But wow, that shade of green really does look good with the brick. Very nice! What helps it work is the painted gutters and windows.

However, I'm still hoping to keep those white if I can find a different color combination that works.

Because of the isolated siding over the garage doors, they really would look better painted that color.

I kind of like the yellow, to be honest. The only bit that doesn't work is that darn garage.

A sage green or blue gray would be great. It’s a great house!!!

You might consider painting the garage door to blend with the brick.

Here's a steel blue with gray blue trim:

And here's the opposite: