Switch vim colorscheme to gruvbox (#23)

.config/nvim/colors/trivial256.vim

@@ -0,0 +1,42 @@
+" Vim color file
+" Maintainer: drauh <drauhx@gmail.com>
+"
+" This theme is based on "simple256" theme by A. Rodin
+"
+" Ignored all GUI-mode colors. Set simple terminal colors
+" to be visible on iTerm.app for OS X with a light background.
+
+set background=light
+if version > 580
+    " no guarantees for version 5.8 and below, but this makes it stop
+    " complaining
+    hi clear
+    if exists("syntax_on")
+        syntax reset
+    endif
+endif
+let g:colors_name="trivial256"
+
+" color terminal definitions
+hi VertSplit    ctermfg=lightgray ctermbg=darkgray cterm=reverse
+hi Folded       ctermfg=blue ctermbg=lightcyan
+hi IncSearch    ctermfg=darkgray ctermbg=yellow
+hi Visual       ctermfg=blue ctermbg=white cterm=reverse
+hi Comment      ctermfg=darkgray cterm=bold
+hi Constant     ctermfg=blue
+hi Literal      ctermfg=blue
+hi Identifier   ctermfg=magenta cterm=none
+hi Keyword      ctermfg=magenta
+hi String       ctermfg=red
+hi Float        ctermfg=magenta
+hi Boolean      ctermfg=darkblue
+hi Number       ctermfg=darkblue
+hi Statement    ctermfg=darkblue
+hi PreProc      ctermfg=blue
+hi Type         ctermfg=blue
+hi Special      ctermfg=darkblue cterm=none
+hi Underlined   ctermfg=blue cterm=underline
+hi Todo         ctermfg=blue ctermbg=yellow cterm=none
+
+" vim: set fdl=0 fdm=marker:
+