flocsy

Customize Randomize CSS plugin to fit any other WordPress plugin or theme 
and randomize colors in your blog.

Randomize CSS

Randomize CSS plugin can be configured to randomize part of the css on each page view. It can for example change random colors.

Scott Reilly

This plugin provides template tags that allow you to retrieve the name, path (relative or absolute), url, or fully marked-up link to a randomly chosen file or files in a specified directory.
Arguments to the functions permit you to limit what file(s) can be randomly selected based on a given set of file extensions. You can also explicitly specify files that should not be randomly selected.
This functionality can be useful for displaying random images/logos or including text from random files onto your site (writing excerpts, multi-line quotes, etc). Other ideas: random ads, random CSS files, random theme template selection.
Notes:
<ul>
<li>
If you want to actually display the name of the random file, be sure to ‘echo’ the results:

</li>
<li>
Unless you limit the file search to only include a particular extension (via <code>$extensions</code> argument), all files in the specified <code>$dir</code> will be under consideration for random selection
</li>
<li>
Can be run inside or outside of “the loop”
</li>
</ul>
Links: <a href="https://coffee2code.com/wp-plugins/random-file/" rel="nofollow ugc">Plugin Homepage</a> | <a href="https://wordpress.org/plugins/random-file/" rel="ugc">Plugin Directory Page</a> | <a href="https://github.com/coffee2code/random-file/" rel="nofollow ugc">GitHub</a> | <a href="https://coffee2code.com" rel="nofollow ugc">Author Homepage</a>
<h3>Developer Documentation</h3>
Developer documentation can be found in <a href="https://github.com/coffee2code/random-file/blob/master/DEVELOPER-DOCS.md" rel="nofollow ugc">DEVELOPER-DOCS.md</a>. That documentation covers the template tags and hooks provided by the plugin.
As an overview, these are the template tags provided by the plugin:
<ul>
<li><code>c2c_random_file()</code> : Retrieves the name of a random file from a specified directory and returns information based on the file.</li>
<li><code>c2c_random_files()</code> : Retrieves the name, path, or link to a specified number of randomly chosen files in a specified directory.</li>
</ul>
These are the hooks provided by the plugin:
<ul>
<li><code>c2c_random_file</code> : Filter to safely invoke <code>c2c_random_file()</code> in such a way that if the plugin were deactivated or deleted, then your calls to the function won’t cause errors in your site.</li>
<li><code>c2c_random_files</code> : Filter to safely invoke <code>c2c_random_files()</code> in such a way that if the plugin were deactivated or deleted, then your calls to the function won’t cause errors in your site.</li>
</ul>

Random File

Retrieve the name, path, or link to a randomly chosen file or files in a specified directory.

Randomize CSS vs Random File