This is a _fork_of vim-noctu; it is currently under development and unlikely to be in a consistent state .
If you are looking for the original noctu.vim color scheme, you'll find the latest version in the author's GitHub repository. If you're looking for a color scheme for GUI Vim, you may be interested in Hemisu, also by the Noah Frederick.
The purpose of the project hasn't changed from the original author's intent:
Rather than specifying particular color values for Vim, I prefer to have consistent colors across all software that I use in the terminal... [Thus] this scheme is restricted to 16 ANSI colors (0 through 15), the representation of which can be redefined by configuring your terminal emulator. This means that you can change your color scheme "globally" without having to edit this script.