Custom CSS files for Markdown themes.
make the Web prettier...and increasingly homogenous...with questionable compatibility with document readers.
Darkishdown.css is an adaptation of yrgoldteeth's adaption of Kevin Burke's beautiful Markdown.css--it's unclear who he may have stolen it from--which offers much better default styling for your markdown files.
Add the following to the top of your markdown files:
<link href="http://github.com/nativeit/markdown-css/raw/master/darkishdown.css" rel="stylesheet"></link>