IMO no shutters , no window boxes neither of those suit the house.I would choose a roof color from the brick and then paint the rest of the siding the same add some white trim around the windows if you like or a bit darker around the windows , a front door with more glass , the garage door the same as the siding.Then some large planters filled with seaonal plantings on either side of the steps. I would also do lower plantings in front of the windows so removing all those taller shrubs that when filled out will hide too much of the lower part of the house.This type of look.

Are there any other houses with that style of roof in the neighborhood or was that someone's unique idea? I'm all about driving around looking at what others have might have done with that unusual roof. Good luck.