Use Pastacode to add code into your posts with the awesome PrismJs coloration library. So, past'a code!
Most lightweight, yet most configurable and advanced PrismJS WordPress integration plugin. Custom fields display (detached) supported.
A lightweight and convenient plugin to integrate Prism Syntax Highlighter into WordPress.
Codebocks Extended with PrismJS includes syntax highlighting, copy to clipboard, and Visual + Text editor integration.
Highlight your code on WordPress with WP PrismJS !