Awesome vim syntax highlighting

.vimrc

"The following three lines map Ctrl+s to save in vi.  You can comment 
"these out, it has nothing to do with syntax highlighting or colors.

" optional lines to turn on pressing F2 to toggle paste mode
noremap <F2> :set invpaste paste?<CR>i
set pastetoggle=<F2>


:nmap <c-s> :w<CR>
:imap <c-s> <Esc>:w<CR>a
:imap <c-s> <Esc><c-s>

syntax on
set background=dark
set hlsearch
set nu
set smartindent
set tabstop=4
set shiftwidth=4
set expandtab
set cursorline
filetype on
filetype plugin indent on

au BufReadPost *.twig colorscheme koehler 
au BufReadPost *.css colorscheme slate
au BufReadPost *.js colorscheme slate2
au BufReadPost *.py colorscheme molokaiyo
au BufReadPost *.html colorscheme monokai
au BufReadPost *.java colorscheme monokai
" au BufReadPost *.php colorscheme monokai

" Default line highlighting for unknown filetypes
hi String ctermfg=140
hi CursorLine ctermbg=235
hi CursorLine guibg=#D3D3D3 cterm=none

autocmd BufReadPost *
  \ if line("'\"") > 1 && line("'\"") <= line("$") |
  \   exe "normal! g`\"" |
  \ endif

Full credit to:

https://github.com/sentientmachine/erics_vim_syntax_and_color_highlighting

Which provides the other half of the installation instructions (contents to unpack into .vim folder)