This is a port of the Emacs theme used by Casey Muratori on his Handmade Hero programming series.
It uses very minimal syntax highlighting and is currently only tested for C, C++ and Emacs Lisp.
Put handmade-theme.el into your .emacs.d directory which can be found at
~/.emacs.d. On Linux ~ expands to your home directory, for example
/home/<user>/.emacs.d. On Windows it expands to %APPDATA%\.emacs.d.
In the future this theme might be added to MELPA, in which case these installation instructions will be much simpler.