In the fall of 1775 Congress chose brown as the original color for the national uniform. In October 1778, however, France sent uniforms with a predominance of blue coats (although there were also brown), and so on 2 October 1779 Congress switched to blue as the official color.
Dawes, William
Lexington, MA — Completed in 1737 by John Hancock's grandfather, the house is now a museum
On the night of Paul Revere's April 1775 ride John Hancock and Samuel Adams were awakened there with news of the advancing British troops.Patriot Battles: How the War of Independence Was Fought (2007)