The theory behind "bright night/white plug" is that a white plug will be silhouetted better when a fish is looking up at it.
The flaw in the theory is whille it may hold true with surface runners like metal lips, it doesn't necessarily apply to lures like Bombers, darters, bottle plugs, sinking needles and anything else that the fish will be looking at laterally.
I use natural colors (blue or dark green over silver) and yellow under the full range of lighting conditions. Fish see natural baits when it's too dark for you to see your hand a foot in front of your face
They see plugs of any color, but may not bite every color, so it does pay to carry an assortment. One of the year in, year out producers on LI is the so-called "chicken scratch" Bomber, which is the pale yellow/cream one with broken stripes (chicken scratches) along the flanks. It's usually the first plug I throw no matter what the lighting conditions are.
I tend to use the darker colors (black, black/purple) only on darker nights.
they're not just for daytime anymore.
Hybrid Mode
