Switch vim colorscheme to gruvbox (#23)

.config/nvim/colors/bluish.vim

@@ -0,0 +1,38 @@
+" local syntax file - set colors on a per-machine basis:
+" vim: tw=0 ts=4 sw=4
+" Vim color file - terminal uses default xterm colors
+" turly's vaguely blue-themed color scheme (I'm only interested in C and bash)
+" See https://jonasjacek.github.io/colors/ for xterm color name table
+
+set background=dark
+hi clear
+if exists("syntax_on")
+  syntax reset
+endif
+let g:colors_name = "bluish"
+hi Normal		guifg=yellow1 guibg=#101848	ctermfg=226 ctermbg=234
+hi Todo         guifg=yellow1 guibg=#101888	ctermfg=226 ctermbg=234
+hi CursorLine	guibg=#282850
+hi LineNr       guifg=gray91  guibg=#303060 ctermfg=250 ctermbg=235
+hi Comment		guifg=cyan3			ctermfg=43
+hi Identifier	guifg=GreenYellow	ctermfg=154
+hi Constant		guifg=lightcyan		ctermfg=195
+hi Statement	guifg=gray95		ctermfg=255
+hi Special		guifg=gray95		ctermfg=255
+hi cDelimiter	guifg=gray91		ctermfg=254
+hi Type			guifg=skyblue		ctermfg=117
+hi StorageClass	guifg=aquamarine	ctermfg=122
+hi cString		guifg=wheat2		ctermfg=229
+hi cSpecial		guifg=antiquewhite	ctermfg=230
+hi cPreCondit	guifg=cyan2			ctermfg=50
+hi cCppOutIf	guifg=cyan2			ctermfg=50
+hi cBoolean		guifg=gray91		ctermfg=254
+hi cOperator	guifg=gray93		ctermfg=254
+hi Structure	guifg=gray93		ctermfg=254
+
+hi Visual       guifg=#262626       guibg=#ffffff  ctermfg=235  ctermbg=15
+
+hi Preproc			guifg=LightGoldenRod	ctermfg=227
+hi cUserFunction	guifg=yellow			ctermfg=226
+hi cAnsiFunction    guifg=antiquewhite2		ctermfg=230
+