Plug Color...At odds with what I've read...

[Raven]

and see a silhouette,,,,
and some of those white plugs might be glow plugs
or maybe they are easier to see...

sometimes it's their color of the day that's preferred .....

[numbskull]

I think the real issue is that not many people buy or fish black plugs. They work just fine, but building confidence to fish them is hard and white is probably a more versatile color. The "dogma" you cite comes from freshwater bass fishing I believe.....supposedly a black jitterbug on a dark night is hard to beat.