I'm a big fan of static site generators. I ditched WordPress for Octopress over two years ago because it was free to host on GitHub Pages and much faster, had much better syntax highlighting, and I liked being able to write posts in Vim, and I've never looked back since.
grunt-markdown-blog, I took the plunge and have built a simple blog generator called generator-simple-static-blog.
I've published it to NPM, so feel free to check it out. It includes code highlighting with the Zenburn colour scheme by default (although highlight.js includes many other themes, so just switch to another one if you want), and it should be easy to edit the templates. I've also included the ability to deploy automatically to GitHub Pages using Grunt.
I don't anticipate moving over to this from Octopress for the foreseeable future, but it's been an interesting project for the weekend.