Smarter Themes

pi Scrollbar wp is fully customizable wordpress scrollbar plugin.You can change scrollbar color, border radius, scroll speed, width, border style & other settings using plugin option page.
 Plugin Features
<ul>
<li>Simple installation & activation</li>
<li>Unlimited colors.</li>
<li>CSS3 animation.</li>
<li>Supported touch devices.</li>
<li>All browser supported</li>
<li>Custom Width.</li>
<li>Scrollbar border radius.</li>
<li>Scrollbar scroll speed.</li>
<li>Scrollbar border.</li>
<li>Auto Hide Enable/Disable Mode.</li>
<li>Lightweight Responsive.</li>
<li>Easy Option Panel.</li>
<li>Easy Documentation.</li>
</ul>

Scrollbar

Customize your browser scrollbars with unlimited styling and color using scrollbar wp plugin.

AsianCoders

Wp Custom scrollbar is nicescroll wordpress plugin. You change your scroll bar just one click. And you get powerful option panel.
<h4>Features</h4>
features of Wp Custom scrollbar
<ul>
<li>Lightweight </li>
<li>Powerful opinion panel</li>
<li>Easy to use</li>
<li>Just install and work</li>
<li>All browser support </li>
<li>Translatable .pot file included.</li>
</ul>
Credits: jquery nicescroll
Email for Support: asiancodersteam@gmail.com
<h3>Arbitrary section</h3>
You may provide arbitrary sections, in the same format as the ones above. This may be of use for extremely complicated 
plugins where more information needs to be conveyed that doesn’t fit into the categories of “description” or 
“installation.” Arbitrary sections will be shown below the built-in sections outlined above.
<h3>A brief Markdown Example</h3>
Here’s a link to <a href="https://wordpress.org/" title="Your favorite software" rel="ugc">WordPress</a> and one to <a href="http://daringfireball.net/projects/markdown/syntax" title="Markdown is what the parser uses to process much of the readme file" rel="nofollow ugc">Markdown’s Syntax Documentation</a>. 
Titles are optional, naturally.
Markdown uses email style notation for blockquotes and I’ve been told:
<blockquote>
Asterisks for emphasis. Double it up for strong.
</blockquote>
<pre><code><?php code(); // goes in backticks ?>
</code></pre>

Wp Custom scrollbar

Nice plugin

Wp Custom scrollbar is nicescroll wordpress plugin.

Scrollbar vs Wp Custom scrollbar