Neckties for daytime can be lighter in color than the ones worn after 6PM, consistent with the brighter lights of day. That is can be, not should, as dark ties are perfectly acceptable whatever the hour. But they do leave an opportunity for a splash of color untaken, if you will.
The reverse is not true, and a light colored tie ought to be changed before dinner for much the same reason that we wear black or mighnight blue bows with our dinner jackets and eschew colors.
In the photo, a bright red 50 ounce Royal Twill tie from Drake's London is worn with a navy suit, tan broadcloth shirt and an old Holland & Holland pocket square with bunny rabbits gamboling about a field of blue.