x2. Do what you feel comfortable with, but many of us don't wash eggs before use. Even though I refrigerate my eggs I feel better if the bloom is left intact. If an egg is that badly soiled I'll most likely feed it to the dogs instead.If an egg is clean it doesn't necessarily *need* washing before use. The bloom protects it.
But many people feel better about washing eggs.
Personally, I only wash eggs with visible dirt/poop on them.
As far as the original question, the speckles are extra pigment, that's all.