Half the houses in New England are all white with black, dark green, or no shutters. Look at almost any farmhouse for examples.

It's boring, but it saves having to buy two colors of paint and the extra care required to apply more than one color. A very practical approach.

I just drove through New Hampshire and saw dozens of homes with trim and body painted the same color, with only the door a different color. They tended to be historic homes, Federal to Greek Revival period. Most did not have shutters and few were painted white. One of the nicest was a deep beige with maroon door. Another was deep red with a black door. Not boring at all; absolutely stunning. Great examples of "less is more."