Once you stick with the red brick and white siding, there isn't really a "modern" you can do, but you can still make it fresh! Go look at Young House Love with their red brick and white trim and cheerful Yellow entry door. younghouselove.com See what they did on their front porch to make it feel new. For your house, I would prescribe something like a french blue door (they make mens shirting in a gorgeous french blue - google that image for that tone) - Wowsa! and with that I could see some wedgewood blue-gray on your shutters (existing shuters are fine in my book - work with what you have!).

The front porch could then incorporate fun decor that draws from the flag - a lot of different distressed barn red accent benches and classic metal star art. Paint out / update mailbox and outdoor fixtures lights in a nice crisp black to echo traditional classic feel, try your house number in wrought iron script and display it under your entry fixture. Use that blue planter on the porch for something green and trailing with space for seasonal flowering color to be added 3 x yr. New outdoor seeded glass lantern fixtures may give you a more "updated" feel but respect the traditional bones you have to work with.

More fresh looks can happen in your planting beds - where you have "balls" of evergreen, trim the tops flatter and lower so the bottom of the bay window is open on the sight line - avoid balls / flat top the little ones and let them range from there sideways. Lift the beautiful red branched small tree / shrub so it arches over the entry door instead of obscuring the sight line. Maybe add an arched classic white vinyl arbor over where the sidewalk meets the drive/ road, and plant more liriope at the base with room for a flowering vine or variegated ivy to grow up and over. I say enhance your cottage charm rather than fight it going modern - the houses that look off are where they try to fight what they've been given.

You have a traditional ranch with a lovely bay window - while cypress is right that you can go off modern with some elements, I don't think you will be happy with it. Even if you painted everything out stark modern tones and changed out the front door, your classic traditional windows / good bones will show through. Better to add fresh color and bring more charm to your existing strengths.