To get you started quickly, here is an example snippet of the configuration commands (place these at the top of your Markdown file):
theme: Work
text: Gill Sans, #F5E5C0, text-scale(0.75), line-height(1.4)
header: Gill Sans UltraBold, text-scale(1.2), line-height(0.9)
header-strong: #EA6045
code: Monaco, auto(20)
background-color: #000000
Available commands:
text
text-strong
text-emphasis
header
header-strong
header-emphasis
All of the above accept font (weight or family), color (as CSS Hex), text-scale and line-height as values.
There also is a code command which accepts font, up to five colors or auto to generate colors that are readable against the background.
Lastly background-color which obviously takes a color as input.