Demo setting colors in the terminal/vim starting with 20

base16-default-20.sh

#!/bin/sh
# Base16 Default - Console color setup script
# Chris Kempson (http://chriskempson.com)

color00="15/15/15" # Base 00 - Black
color01="ac/41/42" # Base 08 - Red
color02="90/a9/59" # Base 0B - Green
color03="f4/bf/75" # Base 0A - Yellow
color04="6a/9f/b5" # Base 0D - Blue
color05="aa/75/9f" # Base 0E - Magenta
color06="75/b5/aa" # Base 0C - Cyan
color07="d0/d0/d0" # Base 05 - White
color08="50/50/50" # Base 03 - Bright Black
color09=$color01 # Base 08 - Bright Red
color10=$color02 # Base 0B - Bright Green
color11=$color03 # Base 0A - Bright Yellow
color12=$color04 # Base 0D - Bright Blue
color13=$color05 # Base 0E - Bright Magenta
color14=$color06 # Base 0C - Bright Cyan
color15="f5/f5/f5" # Base 07 - Bright White
color16="d2/84/45" # Base 09
color17="8f/55/36" # Base 0F
color18="20/20/20" # Base 01
color19="30/30/30" # Base 02
color20="b0/b0/b0" # Base 04
color21="e0/e0/e0" # Base 06

# 16 color space
printf "\e]4;20;rgb:$color00\e\\"
printf "\e]4;21;rgb:$color01\e\\"
printf "\e]4;22;rgb:$color02\e\\"
printf "\e]4;23;rgb:$color03\e\\"
printf "\e]4;24;rgb:$color04\e\\"
printf "\e]4;25;rgb:$color05\e\\"
printf "\e]4;26;rgb:$color06\e\\"
printf "\e]4;27;rgb:$color07\e\\"
printf "\e]4;28;rgb:$color08\e\\"
printf "\e]4;29;rgb:$color09\e\\"
printf "\e]4;30;rgb:$color10\e\\"
printf "\e]4;31;rgb:$color11\e\\"
printf "\e]4;32;rgb:$color12\e\\"
printf "\e]4;33;rgb:$color13\e\\"
printf "\e]4;34;rgb:$color14\e\\"
printf "\e]4;35;rgb:$color15\e\\"


# 256 color space
if [ "$TERM" != linux ]; then
  printf "\e]4;36;rgb:$color16\e\\"
  printf "\e]4;37;rgb:$color17\e\\"
  printf "\e]4;38;rgb:$color18\e\\"
  printf "\e]4;39;rgb:$color19\e\\"
  printf "\e]4;40;rgb:$color20\e\\"
  printf "\e]4;41;rgb:$color21\e\\"
fi

# clean up
unset color00
unset color01
unset color02
unset color03
unset color04
unset color05
unset color06
unset color07
unset color08
unset color09
unset color10
unset color11
unset color12
unset color13
unset color14
unset color15
unset color16
unset color17
unset color18
unset color19
unset color20
unset color21

base16-default-20.vim

" Base16 Default (https://github.com/chriskempson/base16)
" Scheme: Chris Kempson (http://chriskempson.com)

" GUI color definitions
let s:gui00 = "151515"
let s:gui01 = "202020"
let s:gui02 = "303030"
let s:gui03 = "505050"
let s:gui04 = "b0b0b0"
let s:gui05 = "d0d0d0"
let s:gui06 = "e0e0e0"
let s:gui07 = "f5f5f5"
let s:gui08 = "ac4142"
let s:gui09 = "d28445"
let s:gui0A = "f4bf75"
let s:gui0B = "90a959"
let s:gui0C = "75b5aa"
let s:gui0D = "6a9fb5"
let s:gui0E = "aa759f"
let s:gui0F = "8f5536"

" Terminal color definitions
let s:cterm00 = "20"
let s:cterm03 = "28"
let s:cterm05 = "27"
let s:cterm07 = "35"
let s:cterm08 = "21"
let s:cterm0A = "23"
let s:cterm0B = "22"
let s:cterm0C = "26"
let s:cterm0D = "24"
let s:cterm0E = "25"
let s:cterm01 = "38"
let s:cterm02 = "39"
let s:cterm04 = "40"
let s:cterm06 = "41"
let s:cterm09 = "36"
let s:cterm0F = "37"

" Theme setup
hi clear
syntax reset
"set background=dark
let g:colors_name = "base16-default-20"

" Highlighting function
fun <sid>hi(group, guifg, guibg, ctermfg, ctermbg, attr)
  if a:guifg != ""
    exec "hi " . a:group . " guifg=#" . s:gui(a:guifg)
  endif
  if a:guibg != ""
    exec "hi " . a:group . " guibg=#" . s:gui(a:guibg)
  endif
  if a:ctermfg != ""
    exec "hi " . a:group . " ctermfg=" . s:cterm(a:ctermfg)
  endif
  if a:ctermbg != ""
    exec "hi " . a:group . " ctermbg=" . s:cterm(a:ctermbg)
  endif
  if a:attr != ""
    exec "hi " . a:group . " gui=" . a:attr . " cterm=" . a:attr
  endif
endfun

" Return GUI color for light/dark variants
fun s:gui(color)
  if &background == "dark"
    return a:color
  endif

  if a:color == s:gui00
    return s:gui07
  elseif a:color == s:gui01
    return s:gui06
  elseif a:color == s:gui02
    return s:gui05
  elseif a:color == s:gui03
    return s:gui04
  elseif a:color == s:gui04
    return s:gui03
  elseif a:color == s:gui05
    return s:gui02
  elseif a:color == s:gui06
    return s:gui01
  elseif a:color == s:gui07
    return s:gui00
  endif

  return a:color
endfun

" Return terminal color for light/dark variants
fun s:cterm(color)
  if &background == "dark"
    echo &background
    return a:color
  endif

  if a:color == s:cterm00
    return s:cterm07
  elseif a:color == s:cterm01
    return s:cterm06
  elseif a:color == s:cterm02
    return s:cterm05
  elseif a:color == s:cterm03
    return s:cterm04
  elseif a:color == s:cterm04
    return s:cterm03
  elseif a:color == s:cterm05
    return s:cterm02
  elseif a:color == s:cterm06
    return s:cterm01
  elseif a:color == s:cterm07
    return s:cterm00
  endif

  return a:color
endfun

" Vim editor colors
call <sid>hi("Bold",          "", "", "", "", "bold")
call <sid>hi("Debug",         s:gui08, "", s:cterm08, "", "")
call <sid>hi("Directory",     s:gui0D, "", s:cterm0D, "", "")
call <sid>hi("ErrorMsg",      s:gui08, s:gui00, s:cterm08, s:cterm00, "")
call <sid>hi("Exception",     s:gui08, "", s:cterm08, "", "")
call <sid>hi("FoldColumn",    "", s:gui01, "", s:cterm01, "")
call <sid>hi("Folded",        s:gui03, s:gui01, s:cterm03, s:cterm01, "")
call <sid>hi("IncSearch",     s:gui01, s:gui0A, s:cterm01, s:cterm0A, "none")
call <sid>hi("Italic",        "", "", "", "", "none")
call <sid>hi("Macro",         s:gui08, "", s:cterm08, "", "")
call <sid>hi("MatchParen",    s:gui00, s:gui03, s:cterm00, s:cterm03,  "")
call <sid>hi("ModeMsg",       s:gui0B, "", s:cterm0B, "", "")
call <sid>hi("MoreMsg",       s:gui0B, "", s:cterm0B, "", "")
call <sid>hi("Question",      s:gui0A, "", s:cterm0A, "", "")
call <sid>hi("Search",        s:gui01, s:gui0A, s:cterm01, s:cterm0A,  "")
call <sid>hi("SpecialKey",    s:gui03, "", s:cterm03, "", "")
call <sid>hi("TooLong",       s:gui08, "", s:cterm08, "", "")
call <sid>hi("Underlined",    s:gui08, "", s:cterm08, "", "")
call <sid>hi("Visual",        "", s:gui02, "", s:cterm02, "")
call <sid>hi("VisualNOS",     s:gui08, "", s:cterm08, "", "")
call <sid>hi("WarningMsg",    s:gui08, "", s:cterm08, "", "")
call <sid>hi("WildMenu",      s:gui08, "", s:cterm08, "", "")
call <sid>hi("Title",         s:gui0D, "", s:cterm0D, "", "none")
call <sid>hi("Conceal",       s:gui0D, s:gui00, s:cterm0D, s:cterm00, "")
call <sid>hi("Cursor",        s:gui00, s:gui05, s:cterm00, s:cterm05, "")
call <sid>hi("NonText",       s:gui03, "", s:cterm03, "", "")
call <sid>hi("Normal",        s:gui05, s:gui00, s:cterm05, s:cterm00, "")
set background=dark " setting the ctermbg to non-zero effectively set background=light
" This needs to be reset so that s:cterm() returns the correct value
call <sid>hi("LineNr",        s:gui03, s:gui01, s:cterm03, s:cterm01, "")
call <sid>hi("SignColumn",    s:gui03, s:gui01, s:cterm03, s:cterm01, "")
call <sid>hi("SpecialKey",    s:gui03, "", s:cterm03, "", "")
call <sid>hi("StatusLine",    s:gui04, s:gui02, s:cterm04, s:cterm02, "none")
call <sid>hi("StatusLineNC",  s:gui03, s:gui01, s:cterm03, s:cterm01, "none")
call <sid>hi("VertSplit",     s:gui02, s:gui02, s:cterm02, s:cterm02, "none")
call <sid>hi("ColorColumn",   "", s:gui01, "", s:cterm01, "none")
call <sid>hi("CursorColumn",  "", s:gui01, "", s:cterm01, "none")
call <sid>hi("CursorLine",    "", s:gui01, "", s:cterm01, "none")
call <sid>hi("CursorLineNr",  s:gui03, s:gui01, s:cterm03, s:cterm01, "")
call <sid>hi("PMenu",         s:gui04, s:gui01, s:cterm04, s:cterm01, "none")
call <sid>hi("PMenuSel",      s:gui01, s:gui04, s:cterm01, s:cterm04, "")
call <sid>hi("TabLine",       s:gui03, s:gui01, s:cterm03, s:cterm01, "none")
call <sid>hi("TabLineFill",   s:gui03, s:gui01, s:cterm03, s:cterm01, "none")
call <sid>hi("TabLineSel",    s:gui0B, s:gui01, s:cterm0B, s:cterm01, "none")

" Standard syntax highlighting
call <sid>hi("Boolean",      s:gui09, "", s:cterm09, "", "")
call <sid>hi("Character",    s:gui08, "", s:cterm08, "", "")
call <sid>hi("Comment",      s:gui03, "", s:cterm03, "", "")
call <sid>hi("Conditional",  s:gui0E, "", s:cterm0E, "", "")
call <sid>hi("Constant",     s:gui09, "", s:cterm09, "", "")
call <sid>hi("Define",       s:gui0E, "", s:cterm0E, "", "none")
call <sid>hi("Delimiter",    s:gui0F, "", s:cterm0F, "", "")
call <sid>hi("Float",        s:gui09, "", s:cterm09, "", "")
call <sid>hi("Function",     s:gui0D, "", s:cterm0D, "", "")
call <sid>hi("Identifier",   s:gui08, "", s:cterm08, "", "none")
call <sid>hi("Include",      s:gui0D, "", s:cterm0D, "", "")
call <sid>hi("Keyword",      s:gui0E, "", s:cterm0E, "", "")
call <sid>hi("Label",        s:gui0A, "", s:cterm0A, "", "")
call <sid>hi("Number",       s:gui09, "", s:cterm09, "", "")
call <sid>hi("Operator",     s:gui05, "", s:cterm05, "", "none")
call <sid>hi("PreProc",      s:gui0A, "", s:cterm0A, "", "")
call <sid>hi("Repeat",       s:gui0A, "", s:cterm0A, "", "")
call <sid>hi("Special",      s:gui0C, "", s:cterm0C, "", "")
call <sid>hi("SpecialChar",  s:gui0F, "", s:cterm0F, "", "")
call <sid>hi("Statement",    s:gui08, "", s:cterm08, "", "")
call <sid>hi("StorageClass", s:gui0A, "", s:cterm0A, "", "")
call <sid>hi("String",       s:gui0B, "", s:cterm0B, "", "")
call <sid>hi("Structure",    s:gui0E, "", s:cterm0E, "", "")
call <sid>hi("Tag",          s:gui0A, "", s:cterm0A, "", "")
call <sid>hi("Todo",         s:gui0A, s:gui01, s:cterm0A, s:cterm01, "")
call <sid>hi("Type",         s:gui09, "", s:cterm09, "", "none")
call <sid>hi("Typedef",      s:gui0A, "", s:cterm0A, "", "")

" Spelling highlighting
call <sid>hi("SpellBad",     "", s:gui00, "", s:cterm00, "undercurl")
call <sid>hi("SpellLocal",   "", s:gui00, "", s:cterm00, "undercurl")
call <sid>hi("SpellCap",     "", s:gui00, "", s:cterm00, "undercurl")
call <sid>hi("SpellRare",    "", s:gui00, "", s:cterm00, "undercurl")

" Additional diff highlighting
call <sid>hi("DiffAdd",      s:gui0B, s:gui00, s:cterm0B, s:cterm00, "")
call <sid>hi("DiffChange",   s:gui0D, s:gui00, s:cterm0D, s:cterm00, "")
call <sid>hi("DiffDelete",   s:gui08, s:gui00, s:cterm08, s:cterm00, "")
call <sid>hi("DiffText",     s:gui0D, s:gui00, s:cterm0D, s:cterm00, "")
call <sid>hi("DiffAdded",    s:gui0B, s:gui00, s:cterm0B, s:cterm00, "")
call <sid>hi("DiffFile",     s:gui08, s:gui00, s:cterm08, s:cterm00, "")
call <sid>hi("DiffNewFile",  s:gui0B, s:gui00, s:cterm0B, s:cterm00, "")
call <sid>hi("DiffLine",     s:gui0D, s:gui00, s:cterm0D, s:cterm00, "")
call <sid>hi("DiffRemoved",  s:gui08, s:gui00, s:cterm08, s:cterm00, "")

" Ruby highlighting
call <sid>hi("rubyAttribute",               s:gui0D, "", s:cterm0D, "", "")
call <sid>hi("rubyConstant",                s:gui0A, "", s:cterm0A, "", "")
call <sid>hi("rubyInterpolation",           s:gui0B, "", s:cterm0B, "", "")
call <sid>hi("rubyInterpolationDelimiter",  s:gui0F, "", s:cterm0F, "", "")
call <sid>hi("rubyRegexp",                  s:gui0C, "", s:cterm0C, "", "")
call <sid>hi("rubySymbol",                  s:gui0B, "", s:cterm0B, "", "")
call <sid>hi("rubyStringDelimiter",         s:gui0B, "", s:cterm0B, "", "")

" PHP highlighting
call <sid>hi("phpMemberSelector",  s:gui05, "", s:cterm05, "", "")
call <sid>hi("phpComparison",      s:gui05, "", s:cterm05, "", "")
call <sid>hi("phpParent",          s:gui05, "", s:cterm05, "", "")

" HTML highlighting
call <sid>hi("htmlBold",    s:gui0A, "", s:cterm0A, "", "")
call <sid>hi("htmlItalic",  s:gui0E, "", s:cterm0E, "", "")
call <sid>hi("htmlEndTag",  s:gui05, "", s:cterm05, "", "")
call <sid>hi("htmlTag",     s:gui05, "", s:cterm05, "", "")

" CSS highlighting
call <sid>hi("cssBraces",      s:gui05, "", s:cterm05, "", "")
call <sid>hi("cssClassName",   s:gui0E, "", s:cterm0E, "", "")
call <sid>hi("cssColor",       s:gui0C, "", s:cterm0C, "", "")

" SASS highlighting
call <sid>hi("sassidChar",     s:gui08, "", s:cterm08, "", "")
call <sid>hi("sassClassChar",  s:gui09, "", s:cterm09, "", "")
call <sid>hi("sassInclude",    s:gui0E, "", s:cterm0E, "", "")
call <sid>hi("sassMixing",     s:gui0E, "", s:cterm0E, "", "")
call <sid>hi("sassMixinName",  s:gui0D, "", s:cterm0D, "", "")

" JavaScript highlighting
call <sid>hi("javaScript",        s:gui05, "", s:cterm05, "", "")
call <sid>hi("javaScriptBraces",  s:gui05, "", s:cterm05, "", "")
call <sid>hi("javaScriptNumber",  s:gui09, "", s:cterm09, "", "")

" Markdown highlighting
call <sid>hi("markdownCode",              s:gui0B, "", s:cterm0B, "", "")
call <sid>hi("markdownCodeBlock",         s:gui0B, "", s:cterm0B, "", "")
call <sid>hi("markdownHeadingDelimiter",  s:gui0D, "", s:cterm0D, "", "")

" Git highlighting
call <sid>hi("gitCommitOverflow",  s:gui08, "", s:cterm08, "", "")
call <sid>hi("gitCommitSummary",   s:gui0B, "", s:cterm0B, "", "")
  
" GitGutter highlighting
call <sid>hi("GitGutterAdd",     s:gui0B, s:gui01, s:cterm0B, s:cterm01, "")
call <sid>hi("GitGutterChange",  s:gui0D, s:gui01, s:cterm0D, s:cterm01, "")
call <sid>hi("GitGutterDelete",  s:gui08, s:gui01, s:cterm08, s:cterm01, "")
call <sid>hi("GitGutterChangeDelete",  s:gui0E, s:gui01, s:cterm0E, s:cterm01, "")

" Signify highlighting
call <sid>hi("SignifySignAdd",     s:gui0B, s:gui01, s:cterm0B, s:cterm01, "")
call <sid>hi("SignifySignChange",  s:gui0D, s:gui01, s:cterm0D, s:cterm01, "")
call <sid>hi("SignifySignDelete",  s:gui08, s:gui01, s:cterm08, s:cterm01, "")

" NERDTree highlighting
call <sid>hi("NERDTreeDirSlash",  s:gui0D, "", s:cterm0D, "", "")
call <sid>hi("NERDTreeExecFile",  s:gui05, "", s:cterm05, "", "")

" Remove functions
delf <sid>hi
delf <sid>gui
delf <sid>cterm

" Remove color variables
unlet s:gui00 s:gui01 s:gui02 s:gui03  s:gui04  s:gui05  s:gui06  s:gui07  s:gui08  s:gui09 s:gui0A  s:gui0B  s:gui0C  s:gui0D  s:gui0E  s:gui0F
unlet s:cterm00 s:cterm01 s:cterm02 s:cterm03 s:cterm04 s:cterm05 s:cterm06 s:cterm07 s:cterm08 s:cterm09 s:cterm0A s:cterm0B s:cterm0C s:cterm0D s:cterm0E s:cterm0F