Switch vim colorscheme to gruvbox (#23)

.config/nvim/colors/BlackSea.vim

@@ -0,0 +1,37 @@
+" Vim color file
+" Maintainer:   Gerald S. Williams
+" Last Change:  2007 Jun 13
+
+" This is a dark version/opposite of "seashell". The cterm version of this is
+" very similar to "evening".
+"
+" Only values that differ from defaults are specified.
+
+set background=dark
+hi clear
+if exists("syntax_on")
+  syntax reset
+endif
+let g:colors_name = "BlackSea"
+
+hi Normal guibg=Black guifg=seashell ctermfg=White
+hi NonText guifg=LavenderBlush ctermfg=LightMagenta
+hi DiffDelete guibg=DarkRed guifg=Black ctermbg=DarkRed ctermfg=White
+hi DiffAdd guibg=DarkGreen ctermbg=DarkGreen ctermfg=White
+hi DiffChange guibg=Gray30 ctermbg=DarkCyan ctermfg=White
+hi DiffText gui=NONE guibg=DarkCyan ctermbg=DarkCyan ctermfg=Yellow
+hi Comment guifg=LightBlue
+hi PreProc ctermfg=Magenta
+hi StatusLine guibg=#1f001f guifg=DarkSeaGreen cterm=NONE ctermfg=White ctermbg=DarkGreen
+hi StatusLineNC guifg=Gray
+hi VertSplit guifg=Gray
+hi Type gui=NONE
+hi Identifier guifg=Cyan
+hi Statement guifg=brown3 ctermfg=DarkRed
+hi Search guibg=Gold3 ctermfg=White
+hi Folded guibg=gray20
+hi FoldColumn guibg=gray10
+
+" Original values:
+"hi Constant guifg=DeepPink
+"hi PreProc guifg=Magenta ctermfg=Magenta