Muhammad Zamroni

<p>Simple plugin to fight spam in registration form. It show color in box and user must type the name of color. The colors are red, green, blue, yellow, black, white, pink, orange, purple, grey.</p>
<p>Now using generated image to provide color. Bot can’t read this color name. Simple, nice and effective.</p>


matriphe colorspam

Fight spam in registration form using color recognition.

John James Jacoby

Stuttter

<p>Pretty colors for categories, tags, and other taxonomy terms</p>
<p>WP Term Colors allows users to assign colors to any visible category, tag, or taxonomy term using a fancy color picker, providing a customized look for their taxonomies.</p>
<h4>Dependencies</h4>
<p>This plugin requires <a href="https://wordpress.org/plugins/wp-term-meta/" title="Metadata, for taxonomy terms." rel="ugc">WP Term Meta</a></p>
<h4>Also checkout</h4>
<ul>
<li><a href="https://wordpress.org/plugins/wp-chosen/" title="Make long, unwieldy select boxes much more user-friendly." rel="ugc">WP Chosen</a></li>
<li><a href="https://wordpress.org/plugins/wp-pretty-filters/" title="Makes post filters better match what's already in Media & Attachments." rel="ugc">WP Pretty Filters</a></li>
<li><a href="https://wordpress.org/plugins/wp-event-calendar/" title="The best way to manage events in WordPress." rel="ugc">WP Event Calendar</a></li>
<li><a href="https://wordpress.org/plugins/wp-media-categories/" title="Add categories to media & attachments." rel="ugc">WP Media Categories</a></li>
<li><a href="https://wordpress.org/plugins/wp-term-order/" title="Sort taxonomy terms, your way." rel="ugc">WP Term Order</a></li>
<li><a href="https://wordpress.org/plugins/wp-term-authors/" title="Authors for categories, tags, and other taxonomy terms." rel="ugc">WP Term Authors</a></li>
<li><a href="https://wordpress.org/plugins/wp-term-colors/" title="Pretty colors for categories, tags, and other taxonomy terms." rel="ugc">WP Term Colors</a></li>
<li><a href="https://wordpress.org/plugins/wp-term-icons/" title="Pretty icons for categories, tags, and other taxonomy terms." rel="ugc">WP Term Icons</a></li>
<li><a href="https://wordpress.org/plugins/wp-term-visibility/" title="Visibilities for categories, tags, and other taxonomy terms." rel="ugc">WP Term Visibility</a></li>
<li><a href="https://wordpress.org/plugins/wp-user-activity/" title="The best way to log activity in WordPress." rel="ugc">WP User Activity</a></li>
<li><a href="https://wordpress.org/plugins/wp-user-avatars/" title="Allow users to upload avatars or choose them from your media library." rel="ugc">WP User Avatars</a></li>
<li><a href="https://wordpress.org/plugins/wp-user-groups/" title="Group users together with taxonomies & terms." rel="ugc">WP User Groups</a></li>
<li><a href="https://wordpress.org/plugins/wp-user-profiles/" title="A sophisticated way to edit users in WordPress." rel="ugc">WP User Profiles</a></li>
</ul>


WP Term Colors

I needed to save colors for terms, and found that @jjj had already done the work. Accessing the saved colors is pretty straightforward using the new (WP 4.4 or newer) built-in utility function:
$color = get_term_meta( $term_id, 'color', true );
The terms are saved in hex format (#eeee22) so are ready to use once retrieved.
Thanks @jjj.



Works well with WP's new termmeta table

Pretty colors for categories, tags, and other taxonomy terms

matriphe colorspam vs WP Term Colors