Codeblocks Wordpress Plugin - Rating, Reviews, Demo & Download
Plugin Description
Codeblocks lets you add highlighted and formatted source code into your website without cluttering the visual editor. Write your code in individual blocks outside the built-in Content editor, and access these blocks simply by adding [codeblock name='MY_BLOCK']
into your blog post or page. Codeblocks highlights the code on your website using Rainbow.js, and themes can customize the color scheme of your code.
http://z43studio.com/2014/05/codeblocks/
Theme editors: See the Installation section for information on how to adjust Codeblocks options in your theme.