Please give instructions on the formatting of dates and bylines in the Articles block and in the Content covers block across all templates.

Currently they are not customizable but have a fixed text color coming from the campaign templates, which might create a color clash if the editors are choosing a different link text color. Please note that in Campaign pages the bylines and tags are not clickable so that's the reason why their color is not customizable - it's neither body text nor link text. Maybe the easiest would be to make them dark grey in all templates?