Lighting, if necessary, shall be limited to external, noncolored
light, directed to minimize glare upon nearby properties and roads.
Strings of lights are prohibited, except from November 1 to January
30, whether or not they are part of any sign. No sign shall contain
flashing, intermittent, rotating or moving lights, nor consist of
other moving, fluttering or revolving devices such as pennants, banners,
ribbons or streamers; however, pennants, banners, ribbons or streamers
may be employed on an occasional, temporary basis, not more than three
times per year, for periods of one week, to call attention to special
business or related events such as "grand openings," "special sales,"
etc.