Yes, remove the shutters. The window sizes and style aren't really suited for them. I think the sage green Sativa suggested could look nice with the brick and roof colors. Soft white for the trim.

Not sure about colors or shutters - depends on the look you are going for, but definitely paint the brick the same color as you are painting the house. Properly primed, painting brick is fine. The brick causes a strong line that makes the house look too low and horizontal, despite the peaked roof on that section. There is just way too much going on there on the right side of the house with the brick, horizontal clapboard and shutters, and vertical siding on the top. Painting the brick will make a big difference. Garage door does look pretty dated. I would change that out, or at the least, not use contrasting colors on the “trim” and make all the door all one color.

No shutters on a 50s ranch. Get a bolor that is darker for the siding like a sgae green or even a more grayed green. A nice MCM steel door to elimunate the storm door and if you want the scren idea go with a phantom screen a new garage door would be nice and the explore MCM landscaping.

No shutters. Paint garage door all one color. I've seen a house near mine similar decade with brick like yours they painted the house (not brick) a deep dark blue with white trim and a bright fun colored front door in lime green and a orange. At first I didn't like it but it's grown on me.

Do paint down spouts same color as house.

No shutters, sage or gray green as suggested, full lite screen door and possibly a wood look garage door or painted all one color the same as the house.

A Mahogany tone garage door would balance out the warm of the brick really well.