1850:

An Act of Congress (9 Stat. L., 500, 504) provided for a systematic coloring and numbering of all buoys for, prior to this time, they had been painted red, white, or black, without any special system.  The act "prescribed that buoys should be colored and numbered so that in entering from seaward red buoys with even numbers should be on the starboard or right hand; black buoys with odd numbers on the port or left hand; buoy with red and black horizontal stripes should indicate shoals with channel on either side; and buoys in channel ways should be colored with black and white perpendicular stripes.

1850:

An Act of Congress (9 Stat. L., 500, 504) gave legal authority for the first time for the assigning of collectors of customs to lighthouse duty.  Section 9 of this act authorized the Secretary of the Treasury to assign to any of the collectors of customs, the superintendence of such lighthouses, beacons, lightships, and buoys as he might deem best.  The act also stipulated that no collector of customs whose annual salary exceeded $3, 000 a year should receive any compensation as disbursing officer in the Lighthouse Establishment and, in no case, was the compensation of the collectors of customs for disbursements in the Lighthouse Service to exceed $400.00 In any fiscal year.