I use blackfriday, the golang markdown package, to generate my blog and I realized that it does syntax highlighting painlessly. I am now updating all of my snippets so I can get the code highlighting which will be nice.
I also like that fish is supported and that it makes my shell commands look pretty.
The markdown processor:
Here is a list of the supported languages in chroma, used by blackfriday to do the highlighting:
I use the dracula theme as I know what it looks like.