If your running the Nesta web framework and you want to highlight your code, these are the steps I found (albiet a long time ago and things might have changed since then) to configure the code highlighting.
Who doesnt like pretty colors for looking at code, because it sure does help me find errors. So, why not display them on your web page too? Easy for people to read and consume while browsing your site. I know this seems pretty obvious, but what the heck, I will just keep typing.
On your terminal, type the following out: