George Stephanis

Michael Arestad

Hugh is a social color experiment for WordPress. Add the Hugh widget to any sidebar and visitors to your site can pick a color — background, text, the whole page — and broadcast it to everyone else viewing the site at the same time.
How it works:
<ol>
<li>A visitor opens the color picker in the Hugh widget, chooses a hex color, and optionally leaves a short note.</li>
<li>Hugh pushes that color via the REST API and stores it (up to 100 recent entries).</li>
<li>The page background and text color transition smoothly to the new color for all active visitors.</li>
<li>A row of color swatches shows the history of recent choices — click any swatch to jump back to that color.</li>
</ol>
It’s part toy, part social experiment: can your visitors agree on a color, or will it descend into a color battle?
Technical details:
<ul>
<li>Colors are stored via the WP object cache when an external cache (Memcached, Redis) is available, making it fast and ephemeral. Without an external cache it falls back to a WP option for persistence.</li>
<li>Color history is capped at 100 entries, sorted by timestamp.</li>
<li>REST endpoints at <code>hugh/v1/colors</code> (GET) and <code>hugh/v1/colors/add</code> (POST) are public and unauthenticated by design — this is intentional for the live-sharing mechanic.</li>
<li>The <code>hugh_css</code> filter lets themes register custom CSS overrides. Twenty Seventeen support is built in; other themes can hook in via <code>add_filter( 'hugh_css', ... )</code>.</li>
<li>Colors are rendered as smooth CSS transitions so the page doesn’t flash when a new color arrives.</li>
</ul>
Note: Hugh works best on sites with an external object cache. Without one, colors are persisted to the database and shared state may lag under concurrent visitors.

Hugh

Hugh is your personal color consultant. However, Hugh also easily gives in to peer pressure.

ThemeZee

The Custom Color Palette plugin allows you to change the default color palette in the new WordPress Gutenberg Editor.
It replaces the color palette of WordPress Core and the theme.
<h4>Enable and change colors from three categories</h4>
<ul>
<li>Main Colors 
Primary, Secondary and Accent colors</li>
<li>Grayscale Colors 
White, Light Gray, Dark Gray, Black</li>
<li>Primary Colors 
Red, Green, Blue, Yellow, etc.</li>
</ul>
<h4>Requirements</h4>
This plugin only works with the new Editor. You have to use WordPress 5.0 or the <a href="https://wordpress.org/plugins/gutenberg/" rel="ugc">Gutenberg</a> plugin.
Note: Changing colors works with CSS variables and is not supported in outdated browsers like Internet Explorer.

Custom Color Palette for Gutenberg

A small and simple plugin to adjust the default color palette of the new WordPress Gutenberg Editor.

Hugh vs Custom Color Palette for Gutenberg