Remove all shutters if you have any. Paint the house a neutral color such as any shade of brown, gray, yellow, orange or tan, staying away from traditional colonial house colors blue, green, red or cream.
Enlarge the windows at the front of the house, opting for an enormous rectangular window or large arched windows. Bigger windows will give a home a more modern look.
Add a balcony off the second floor at the front of the house. A balcony, aside from giving you more outdoor space, will update and alter the look of a colonial home, making it appear more modern.
Landscape the front yard adding elements such as a rock garden, a pond or waterfall. Sculpt hedges into manicured shapes and figures. Colonial homes typically have understated front lawns with just grass and few neatly trimmed bushes.