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Automagically highlight all your code blocks. 
This plugin uses highlight.js to detect and highlight “pre” HTML tags.
To color theme use the customizer: Appearance -> Customize -> Code Highlighting Theme

Awesome Code Highlighting

Automagically highlight all your code blocks.

Themeisle

Hardeep Asrani

WPShout

Uriahs Victor

rodicaelena

Advanced CSS Editor is a lightweight plugin that lets you write different CSS code for each device (desktop, tablets, and mobile phones) right from the Live Customizer, letting you can see the outcome in real time.
So, pick a device, write your custom CSS code, and watch the results while you’re editing.
Features:
<ul>
<li>Possibility to add different custom CSS based on the type of deviced</li>
<li>Experience live all the changes via Appearance -> Customize</li>
<li>Minify your CSS to optimize your site</li>
<li>Custom CSS for Phone</li>
<li>Custom CSS for Tablet</li>
<li>Custom CSS for Desktop</li>
<li>Custom CSS for Global purpose</li>
</ul>
This plugin is maintained and supported by Themeisle, check out some of the other <a href="http://themeisle.com/wordpress-plugins/" rel="nofollow ugc">WordPress plugins</a> and <a href="http://themeisle.com/wordpress-themes/free/" rel="nofollow ugc">free themes</a> we’ve developed.

Advanced CSS Editor

Advanced CSS Editor is a lightweight plugin that lets you write different CSS code for each device (desktop, tablets, and mobile phones) right from th …

Awesome Code Highlighting vs Advanced CSS Editor