" To use, save this file and type ":so %"
" Optional: First enter ":let g:rgb_fg=1" to highlight foreground only.
" Restore normal highlighting by typing ":e"
setlocal nohlsearch
call search('^" BEGIN_COLOR_LIST', 'e')
while search('\w\+') > 0
  let w = expand('<cword>')
  if w == 'END_COLOR_LIST'
    break
  endif
  if exists('g:rgb_fg') && g:rgb_fg
    execute 'hi col_'.w.' guifg='.w.' guibg=NONE'
  else
    execute 'hi col_'.w.' guifg=black guibg='.w
  endif
  execute 'syn keyword col_'.w.' '.w.' contained containedin=vimLineComment'
endwhile
call search('^" BEGIN_COLOR_LIST')
normal 0jzt

" Following is from $VIMRUNTIME/rgb.txt with duplicate colors omitted.
" BEGIN_COLOR_LIST
" snow GhostWhite WhiteSmoke gainsboro FloralWhite OldLace linen
" AntiqueWhite PapayaWhip BlanchedAlmond bisque PeachPuff NavajoWhite
" moccasin cornsilk ivory LemonChiffon seashell honeydew MintCream azure
" AliceBlue lavender LavenderBlush MistyRose white black DarkSlateGray
" DimGray SlateGray LightSlateGray gray LightGray MidnightBlue navy
" NavyBlue CornflowerBlue DarkSlateBlue SlateBlue MediumSlateBlue
" LightSlateBlue MediumBlue RoyalBlue blue DodgerBlue DeepSkyBlue
" SkyBlue LightSkyBlue SteelBlue LightSteelBlue LightBlue PowderBlue
" PaleTurquoise DarkTurquoise MediumTurquoise turquoise cyan LightCyan
" CadetBlue MediumAquamarine aquamarine DarkGreen DarkOliveGreen
" DarkSeaGreen SeaGreen MediumSeaGreen LightSeaGreen PaleGreen
" SpringGreen LawnGreen green chartreuse MediumSpringGreen GreenYellow
" LimeGreen YellowGreen ForestGreen OliveDrab DarkKhaki khaki
" PaleGoldenrod LightGoldenrodYellow LightYellow yellow gold
" LightGoldenrod goldenrod DarkGoldenrod RosyBrown IndianRed SaddleBrown
" sienna peru burlywood beige wheat SandyBrown tan chocolate firebrick
" brown DarkSalmon salmon LightSalmon orange DarkOrange coral LightCoral
" tomato OrangeRed red HotPink DeepPink pink LightPink PaleVioletRed
" maroon MediumVioletRed VioletRed magenta violet plum orchid
" MediumOrchid DarkOrchid DarkViolet BlueViolet purple MediumPurple
" thistle snow1 snow2 snow3 snow4 seashell1 seashell2 seashell3
" seashell4 AntiqueWhite1 AntiqueWhite2 AntiqueWhite3 AntiqueWhite4
" bisque1 bisque2 bisque3 bisque4 PeachPuff1 PeachPuff2 PeachPuff3
" PeachPuff4 NavajoWhite1 NavajoWhite2 NavajoWhite3 NavajoWhite4
" LemonChiffon1 LemonChiffon2 LemonChiffon3 LemonChiffon4 cornsilk1
" cornsilk2 cornsilk3 cornsilk4 ivory1 ivory2 ivory3 ivory4 honeydew1
" honeydew2 honeydew3 honeydew4 LavenderBlush1 LavenderBlush2
" LavenderBlush3 LavenderBlush4 MistyRose1 MistyRose2 MistyRose3
" MistyRose4 azure1 azure2 azure3 azure4 SlateBlue1 SlateBlue2
" SlateBlue3 SlateBlue4 RoyalBlue1 RoyalBlue2 RoyalBlue3 RoyalBlue4
" blue1 blue2 blue3 blue4 DodgerBlue1 DodgerBlue2 DodgerBlue3
" DodgerBlue4 SteelBlue1 SteelBlue2 SteelBlue3 SteelBlue4 DeepSkyBlue1
" DeepSkyBlue2 DeepSkyBlue3 DeepSkyBlue4 SkyBlue1 SkyBlue2 SkyBlue3
" SkyBlue4 LightSkyBlue1 LightSkyBlue2 LightSkyBlue3 LightSkyBlue4
" SlateGray1 SlateGray2 SlateGray3 SlateGray4 LightSteelBlue1
" LightSteelBlue2 LightSteelBlue3 LightSteelBlue4 LightBlue1 LightBlue2
" LightBlue3 LightBlue4 LightCyan1 LightCyan2 LightCyan3 LightCyan4
" PaleTurquoise1 PaleTurquoise2 PaleTurquoise3 PaleTurquoise4 CadetBlue1
" CadetBlue2 CadetBlue3 CadetBlue4 turquoise1 turquoise2 turquoise3
" turquoise4 cyan1 cyan2 cyan3 cyan4 DarkSlateGray1 DarkSlateGray2
" DarkSlateGray3 DarkSlateGray4 aquamarine1 aquamarine2 aquamarine3
" aquamarine4 DarkSeaGreen1 DarkSeaGreen2 DarkSeaGreen3 DarkSeaGreen4
" SeaGreen1 SeaGreen2 SeaGreen3 SeaGreen4 PaleGreen1 PaleGreen2
" PaleGreen3 PaleGreen4 SpringGreen1 SpringGreen2 SpringGreen3
" SpringGreen4 green1 green2 green3 green4 chartreuse1 chartreuse2
" chartreuse3 chartreuse4 OliveDrab1 OliveDrab2 OliveDrab3 OliveDrab4
" DarkOliveGreen1 DarkOliveGreen2 DarkOliveGreen3 DarkOliveGreen4 khaki1
" khaki2 khaki3 khaki4 LightGoldenrod1 LightGoldenrod2 LightGoldenrod3
" LightGoldenrod4 LightYellow1 LightYellow2 LightYellow3 LightYellow4
" yellow1 yellow2 yellow3 yellow4 gold1 gold2 gold3 gold4 goldenrod1
" goldenrod2 goldenrod3 goldenrod4 DarkGoldenrod1 DarkGoldenrod2
" DarkGoldenrod3 DarkGoldenrod4 RosyBrown1 RosyBrown2 RosyBrown3
" RosyBrown4 IndianRed1 IndianRed2 IndianRed3 IndianRed4 sienna1 sienna2
" sienna3 sienna4 burlywood1 burlywood2 burlywood3 burlywood4 wheat1
" wheat2 wheat3 wheat4 tan1 tan2 tan3 tan4 chocolate1 chocolate2
" chocolate3 chocolate4 firebrick1 firebrick2 firebrick3 firebrick4
" brown1 brown2 brown3 brown4 salmon1 salmon2 salmon3 salmon4
" LightSalmon1 LightSalmon2 LightSalmon3 LightSalmon4 orange1 orange2
" orange3 orange4 DarkOrange1 DarkOrange2 DarkOrange3 DarkOrange4 coral1
" coral2 coral3 coral4 tomato1 tomato2 tomato3 tomato4 OrangeRed1
" OrangeRed2 OrangeRed3 OrangeRed4 red1 red2 red3 red4 DeepPink1
" DeepPink2 DeepPink3 DeepPink4 HotPink1 HotPink2 HotPink3 HotPink4
" pink1 pink2 pink3 pink4 LightPink1 LightPink2 LightPink3 LightPink4
" PaleVioletRed1 PaleVioletRed2 PaleVioletRed3 PaleVioletRed4 maroon1
" maroon2 maroon3 maroon4 VioletRed1 VioletRed2 VioletRed3 VioletRed4
" magenta1 magenta2 magenta3 magenta4 orchid1 orchid2 orchid3 orchid4
" plum1 plum2 plum3 plum4 MediumOrchid1 MediumOrchid2 MediumOrchid3
" MediumOrchid4 DarkOrchid1 DarkOrchid2 DarkOrchid3 DarkOrchid4 purple1
" purple2 purple3 purple4 MediumPurple1 MediumPurple2 MediumPurple3
" MediumPurple4 thistle1 thistle2 thistle3 thistle4 gray0 gray1 gray2
" gray3 gray4 gray5 gray6 gray7 gray8 gray9 gray10 gray11 gray12 gray13
" gray14 gray15 gray16 gray17 gray18 gray19 gray20 gray21 gray22 gray23
" gray24 gray25 gray26 gray27 gray28 gray29 gray30 gray31 gray32 gray33
" gray34 gray35 gray36 gray37 gray38 gray39 gray40 gray41 gray42 gray43
" gray44 gray45 gray46 gray47 gray48 gray49 gray50 gray51 gray52 gray53
" gray54 gray55 gray56 gray57 gray58 gray59 gray60 gray61 gray62 gray63
" gray64 gray65 gray66 gray67 gray68 gray69 gray70 gray71 gray72 gray73
" gray74 gray75 gray76 gray77 gray78 gray79 gray80 gray81 gray82 gray83
" gray84 gray85 gray86 gray87 gray88 gray89 gray90 gray91 gray92 gray93
" gray94 gray95 gray96 gray97 gray98 gray99 gray100 DarkGray DarkBlue
" DarkCyan DarkMagenta DarkRed LightGreen
" END_COLOR_LIST