diff --git a/colors/solarized8_dark.vim b/colors/solarized8_dark.vim
index 13f0d8b..162b313 100644
--- a/colors/solarized8_dark.vim
+++ b/colors/solarized8_dark.vim
@@ -204,6 +204,8 @@ hi! texMathMatcher ctermfg=3 guifg=#b58900 ctermbg=8 guibg=#002b36 cterm=NONE gu
 hi! texMathMatcher ctermfg=3 guifg=#b58900 ctermbg=8 guibg=#002b36 cterm=NONE gui=NONE
 hi! texRefLabel ctermfg=3 guifg=#b58900 ctermbg=8 guibg=#002b36 cterm=NONE gui=NONE
 hi! rubyDefine ctermfg=14 guifg=#93a1a1 ctermbg=8 guibg=#002b36 cterm=NONE,bold gui=NONE,bold
+hi! link rubySymbol Type
+hi! rubyBoolean  ctermfg=5 guifg=#d33682 ctermbg=8 guibg=#002b36
 hi! cPreCondit ctermfg=9 guifg=#cb4b16 ctermbg=NONE guibg=NONE cterm=NONE gui=NONE
 hi! VarId ctermfg=4 guifg=#268bd2 ctermbg=NONE guibg=NONE cterm=NONE gui=NONE
 hi! ConId ctermfg=3 guifg=#b58900 ctermbg=NONE guibg=NONE cterm=NONE gui=NONE
diff --git a/colors/solarized8_dark_flat.vim b/colors/solarized8_dark_flat.vim
index 4e3ef60..cfbb816 100644
--- a/colors/solarized8_dark_flat.vim
+++ b/colors/solarized8_dark_flat.vim
@@ -202,6 +202,8 @@ hi! texMathMatcher ctermfg=3 guifg=#b58900 ctermbg=8 guibg=#002b36 cterm=NONE gu
 hi! texMathMatcher ctermfg=3 guifg=#b58900 ctermbg=8 guibg=#002b36 cterm=NONE gui=NONE
 hi! texRefLabel ctermfg=3 guifg=#b58900 ctermbg=8 guibg=#002b36 cterm=NONE gui=NONE
 hi! rubyDefine ctermfg=14 guifg=#93a1a1 ctermbg=8 guibg=#002b36 cterm=NONE,bold gui=NONE,bold
+hi! link rubySymbol Type
+hi! rubyBoolean  ctermfg=5 guifg=#d33682 ctermbg=8 guibg=#002b36
 hi! cPreCondit ctermfg=9 guifg=#cb4b16 ctermbg=NONE guibg=NONE cterm=NONE gui=NONE
 hi! VarId ctermfg=4 guifg=#268bd2 ctermbg=NONE guibg=NONE cterm=NONE gui=NONE
 hi! ConId ctermfg=3 guifg=#b58900 ctermbg=NONE guibg=NONE cterm=NONE gui=NONE
diff --git a/colors/solarized8_dark_high.vim b/colors/solarized8_dark_high.vim
index cca7a87..5eaace4 100644
--- a/colors/solarized8_dark_high.vim
+++ b/colors/solarized8_dark_high.vim
@@ -204,6 +204,8 @@ hi! texMathMatcher ctermfg=3 guifg=#b58900 ctermbg=8 guibg=#002b36 cterm=NONE gu
 hi! texMathMatcher ctermfg=3 guifg=#b58900 ctermbg=8 guibg=#002b36 cterm=NONE gui=NONE
 hi! texRefLabel ctermfg=3 guifg=#b58900 ctermbg=8 guibg=#002b36 cterm=NONE gui=NONE
 hi! rubyDefine ctermfg=7 guifg=#eee8d5 ctermbg=8 guibg=#002b36 cterm=NONE,bold gui=NONE,bold
+hi! link rubySymbol Type
+hi! rubyBoolean  ctermfg=5 guifg=#d33682 ctermbg=8 guibg=#002b36
 hi! cPreCondit ctermfg=9 guifg=#cb4b16 ctermbg=NONE guibg=NONE cterm=NONE gui=NONE
 hi! VarId ctermfg=4 guifg=#268bd2 ctermbg=NONE guibg=NONE cterm=NONE gui=NONE
 hi! ConId ctermfg=3 guifg=#b58900 ctermbg=NONE guibg=NONE cterm=NONE gui=NONE
diff --git a/colors/solarized8_dark_low.vim b/colors/solarized8_dark_low.vim
index ed4f70d..4bb2e28 100644
--- a/colors/solarized8_dark_low.vim
+++ b/colors/solarized8_dark_low.vim
@@ -204,6 +204,8 @@ hi! texMathMatcher ctermfg=3 guifg=#b58900 ctermbg=0 guibg=#073642 cterm=NONE gu
 hi! texMathMatcher ctermfg=3 guifg=#b58900 ctermbg=0 guibg=#073642 cterm=NONE gui=NONE
 hi! texRefLabel ctermfg=3 guifg=#b58900 ctermbg=0 guibg=#073642 cterm=NONE gui=NONE
 hi! rubyDefine ctermfg=14 guifg=#93a1a1 ctermbg=0 guibg=#073642 cterm=NONE,bold gui=NONE,bold
+hi! link rubySymbol Type
+hi! rubyBoolean  ctermfg=5 guifg=#d33682 ctermbg=0 guibg=#073642
 hi! cPreCondit ctermfg=9 guifg=#cb4b16 ctermbg=NONE guibg=NONE cterm=NONE gui=NONE
 hi! VarId ctermfg=4 guifg=#268bd2 ctermbg=NONE guibg=NONE cterm=NONE gui=NONE
 hi! ConId ctermfg=3 guifg=#b58900 ctermbg=NONE guibg=NONE cterm=NONE gui=NONE
diff --git a/colors/solarized8_light.vim b/colors/solarized8_light.vim
index 4ff5828..ca199ae 100644
--- a/colors/solarized8_light.vim
+++ b/colors/solarized8_light.vim
@@ -216,6 +216,8 @@ hi! texMathMatcher ctermfg=3 guifg=#b58900 ctermbg=15 guibg=#fdf6e3 cterm=NONE g
 hi! texMathMatcher ctermfg=3 guifg=#b58900 ctermbg=15 guibg=#fdf6e3 cterm=NONE gui=NONE
 hi! texRefLabel ctermfg=3 guifg=#b58900 ctermbg=15 guibg=#fdf6e3 cterm=NONE gui=NONE
 hi! rubyDefine ctermfg=10 guifg=#586e75 ctermbg=15 guibg=#fdf6e3 cterm=NONE,bold gui=NONE,bold
+hi! link rubySymbol Type
+hi! rubyBoolean  ctermfg=5 guifg=#d33682 ctermbg=15 guibg=#fdf6e3
 hi! cPreCondit ctermfg=9 guifg=#cb4b16 ctermbg=NONE guibg=NONE cterm=NONE gui=NONE
 hi! VarId ctermfg=4 guifg=#268bd2 ctermbg=NONE guibg=NONE cterm=NONE gui=NONE
 hi! ConId ctermfg=3 guifg=#b58900 ctermbg=NONE guibg=NONE cterm=NONE gui=NONE
diff --git a/colors/solarized8_light_flat.vim b/colors/solarized8_light_flat.vim
index 01b4fb1..6973c98 100644
--- a/colors/solarized8_light_flat.vim
+++ b/colors/solarized8_light_flat.vim
@@ -214,6 +214,8 @@ hi! texMathMatcher ctermfg=3 guifg=#b58900 ctermbg=15 guibg=#fdf6e3 cterm=NONE g
 hi! texMathMatcher ctermfg=3 guifg=#b58900 ctermbg=15 guibg=#fdf6e3 cterm=NONE gui=NONE
 hi! texRefLabel ctermfg=3 guifg=#b58900 ctermbg=15 guibg=#fdf6e3 cterm=NONE gui=NONE
 hi! rubyDefine ctermfg=10 guifg=#586e75 ctermbg=15 guibg=#fdf6e3 cterm=NONE,bold gui=NONE,bold
+hi! link rubySymbol Type
+hi! rubyBoolean  ctermfg=5 guifg=#d33682 ctermbg=15 guibg=#fdf6e3
 hi! cPreCondit ctermfg=9 guifg=#cb4b16 ctermbg=NONE guibg=NONE cterm=NONE gui=NONE
 hi! VarId ctermfg=4 guifg=#268bd2 ctermbg=NONE guibg=NONE cterm=NONE gui=NONE
 hi! ConId ctermfg=3 guifg=#b58900 ctermbg=NONE guibg=NONE cterm=NONE gui=NONE
diff --git a/colors/solarized8_light_high.vim b/colors/solarized8_light_high.vim
index d3d4c17..6c1de0b 100644
--- a/colors/solarized8_light_high.vim
+++ b/colors/solarized8_light_high.vim
@@ -216,6 +216,8 @@ hi! texMathMatcher ctermfg=3 guifg=#b58900 ctermbg=15 guibg=#fdf6e3 cterm=NONE g
 hi! texMathMatcher ctermfg=3 guifg=#b58900 ctermbg=15 guibg=#fdf6e3 cterm=NONE gui=NONE
 hi! texRefLabel ctermfg=3 guifg=#b58900 ctermbg=15 guibg=#fdf6e3 cterm=NONE gui=NONE
 hi! rubyDefine ctermfg=0 guifg=#073642 ctermbg=15 guibg=#fdf6e3 cterm=NONE,bold gui=NONE,bold
+hi! link rubySymbol Type
+hi! rubyBoolean  ctermfg=5 guifg=#d33682 ctermbg=15 guibg=#fdf6e3
 hi! cPreCondit ctermfg=9 guifg=#cb4b16 ctermbg=NONE guibg=NONE cterm=NONE gui=NONE
 hi! VarId ctermfg=4 guifg=#268bd2 ctermbg=NONE guibg=NONE cterm=NONE gui=NONE
 hi! ConId ctermfg=3 guifg=#b58900 ctermbg=NONE guibg=NONE cterm=NONE gui=NONE
diff --git a/colors/solarized8_light_low.vim b/colors/solarized8_light_low.vim
index f1b34ba..369c61d 100644
--- a/colors/solarized8_light_low.vim
+++ b/colors/solarized8_light_low.vim
@@ -216,6 +216,8 @@ hi! texMathMatcher ctermfg=3 guifg=#b58900 ctermbg=7 guibg=#eee8d5 cterm=NONE gu
 hi! texMathMatcher ctermfg=3 guifg=#b58900 ctermbg=7 guibg=#eee8d5 cterm=NONE gui=NONE
 hi! texRefLabel ctermfg=3 guifg=#b58900 ctermbg=7 guibg=#eee8d5 cterm=NONE gui=NONE
 hi! rubyDefine ctermfg=10 guifg=#586e75 ctermbg=7 guibg=#eee8d5 cterm=NONE,bold gui=NONE,bold
+hi! link rubySymbol Type
+hi! rubyBoolean  ctermfg=5 guifg=#d33682 ctermbg=7 guibg=#eee8d5
 hi! cPreCondit ctermfg=9 guifg=#cb4b16 ctermbg=NONE guibg=NONE cterm=NONE gui=NONE
 hi! VarId ctermfg=4 guifg=#268bd2 ctermbg=NONE guibg=NONE cterm=NONE gui=NONE
 hi! ConId ctermfg=3 guifg=#b58900 ctermbg=NONE guibg=NONE cterm=NONE gui=NONE
diff --git a/src/solarized8.vim b/src/solarized8.vim
index ccf8ffd..a8cb8dc 100644
--- a/src/solarized8.vim
+++ b/src/solarized8.vim
@@ -674,6 +674,8 @@ for s:solarized_background in ["dark", "light"]
     " ruby highlighting "{{{
     " ---------------------------------------------------------------------
     call s:put("hi! rubyDefine"     . s:fg_base1  .s:bg_back   .s:fmt_bold)
+    call s:put("hi! link rubySymbol Type")
+    call s:put("hi! rubyBoolean "   . s:fg_magenta.s:bg_back)
     "rubyInclude
     "rubySharpBang
     "rubyAccess