<p></p>
<blockquote>
<p dir="auto">You don't need to change the theme of the page</p>
</blockquote>
<p dir="auto">I did that for testing, but since listening increased the complexity unnecessarily, I left that for a second pass.</p>
<p dir="auto">But suppose the site needs a theme watcher anyway because the cal-heatmap doesn't want to let CSS do the color mixing theme-agnostically. In that case, instead of having two listeners, a common solution that includes MutationObservers outside of jQuery would be the one with the least overhead.</p>

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