impact
The impact molecule simply reverses the color scheme of any element, and has a couple of additional rules to deal with card and label descendants.
Example
OPINION
The Episcopal Church changed course for our LGBT members
The Kansas Republican Party is taking a stance on transgender identity
Letters: Readers discuss teen drinking, tax-cut benefits in Missouri and student protests

HTML
<article class="card impact">
<figure>
<a href="https://mcclatchy.github.io/saratoga/food/205504249/">
<img src="/img/kitten.jpg" alt="Kitten clings for life during Hurricane Florence" loading="lazy">
</a>
</figure>
<div class="package">
<a class="kicker h6" href="https://mcclatchy.github.io/saratoga/food/">FOOD</a>
<h3 class="h3"><a href="#">Kitten clings for life as man awaits rescue from Florence.</a></h3>
<time>March 16, 2018 11:33 am</time>
</div>
</article>