It shall be the duty of every owner of a building
in the Village to cause to be displayed thereon the correct street
number of said building and at all times to maintain such number in
compliance with the provisions of this article. The figure or figures
comprising said number shall be placed on said building in such manner
as to be plainly legible from the center of the street at all times
between sunrise and sunset. The color of said figures shall be in
sharp contrast to the color of their background.