--- a/runtime/syntax/falcon.vim
+++ b/runtime/syntax/falcon.vim
@@ -3,8 +3,8 @@
 " Maintainer:   Steven Oliver <oliver.steven@gmail.com>
 " Website:      http://github.com/steveno/vim-files/blob/master/syntax/falcon.vim
 " Credits:      Thanks the ruby.vim authors, I borrowed a lot!
+"               Thanks to the lisp authors for the rainbow code!
 " -------------------------------------------------------------------------------
-" GetLatestVimScripts: 2745 1 :AutoInstall: falcon.vim
 
 " When wanted, highlight the trailing whitespace.
 if exists("c_space_errors")
@@ -56,6 +56,7 @@ syn keyword falconBool true false
 
 " Constants
 syn keyword falconConst PI E nil
+syn match   falconConstant  "\%(\%([.@$]\@<!\.\)\@<!\<\|::\)\_s*\zs\u\w*\%(\>\|::\)\@=\%(\s*(\)\@!"
 
 " Comments
 syn match falconCommentSkip contained "^\s*\*\($\|\s\+\)"
@@ -116,6 +117,47 @@ syn region falconString start=+\%(\%(cla
 syn region falconString start=+\%(\%(class\s*\|\%([]}).]\|::\)\)\_s*\|\w\)\@<!<<-'\z([^']*\)'\ze+hs=s+3  matchgroup=falconStringDelimiter end=+^\s*\zs\z1$+ fold keepend
 syn region falconString start=+\%(\%(class\s*\|\%([]}).]\|::\)\)\_s*\|\w\)\@<!<<-`\z([^`]*\)`\ze+hs=s+3  matchgroup=falconStringDelimiter end=+^\s*\zs\z1$+ contains=falconStringEscape fold keepend
 
+" Falcon rainbox to highlight parens in varying colors
+if exists("g:falcon_rainbow") && g:falcon_rainbow != 0
+    syn region falconParen0           matchgroup=hlLevel0 start="`\=(" end=")" skip="|.\{-}|" contains=@falconListCluster,falconParen1
+    syn region falconParen1 contained matchgroup=hlLevel1 start="`\=(" end=")" skip="|.\{-}|" contains=@falconListCluster,falconParen2
+    syn region falconParen2 contained matchgroup=hlLevel2 start="`\=(" end=")" skip="|.\{-}|" contains=@falconListCluster,falconParen3
+    syn region falconParen3 contained matchgroup=hlLevel3 start="`\=(" end=")" skip="|.\{-}|" contains=@falconListCluster,falconParen4
+    syn region falconParen4 contained matchgroup=hlLevel4 start="`\=(" end=")" skip="|.\{-}|" contains=@falconListCluster,falconParen5
+    syn region falconParen5 contained matchgroup=hlLevel5 start="`\=(" end=")" skip="|.\{-}|" contains=@falconListCluster,falconParen6
+    syn region falconParen6 contained matchgroup=hlLevel6 start="`\=(" end=")" skip="|.\{-}|" contains=@falconListCluster,falconParen7
+    syn region falconParen7 contained matchgroup=hlLevel7 start="`\=(" end=")" skip="|.\{-}|" contains=@falconListCluster,falconParen8
+    syn region falconParen8 contained matchgroup=hlLevel8 start="`\=(" end=")" skip="|.\{-}|" contains=@falconListCluster,falconParen9
+    syn region falconParen9 contained matchgroup=hlLevel9 start="`\=(" end=")" skip="|.\{-}|" contains=@falconListCluster,falconParen0
+endif
+
+" Setup the colors for the rainbox
+if exists("g:falcon_rainbow") && g:falcon_rainbow != 0
+    if &bg == "dark"
+        hi def hlLevel0 ctermfg=red         guifg=red1
+        hi def hlLevel1 ctermfg=yellow      guifg=orange1
+        hi def hlLevel2 ctermfg=green       guifg=yellow1
+        hi def hlLevel3 ctermfg=cyan        guifg=greenyellow
+        hi def hlLevel4 ctermfg=magenta     guifg=green1
+        hi def hlLevel5 ctermfg=red         guifg=springgreen1
+        hi def hlLevel6 ctermfg=yellow      guifg=cyan1
+        hi def hlLevel7 ctermfg=green       guifg=slateblue1
+        hi def hlLevel8 ctermfg=cyan        guifg=magenta1
+        hi def hlLevel9 ctermfg=magenta     guifg=purple1
+    else
+        hi def hlLevel0 ctermfg=red         guifg=red3
+        hi def hlLevel1 ctermfg=darkyellow  guifg=orangered3
+        hi def hlLevel2 ctermfg=darkgreen   guifg=orange2
+        hi def hlLevel3 ctermfg=blue        guifg=yellow3
+        hi def hlLevel4 ctermfg=darkmagenta guifg=olivedrab4
+        hi def hlLevel5 ctermfg=red         guifg=green4
+        hi def hlLevel6 ctermfg=darkyellow  guifg=paleturquoise3
+        hi def hlLevel7 ctermfg=darkgreen   guifg=deepskyblue4
+        hi def hlLevel8 ctermfg=blue        guifg=darkslateblue
+        hi def hlLevel9 ctermfg=darkmagenta guifg=darkviolet
+    endif
+endif
+
 " Syntax Synchronizing
 syn sync minlines=10 maxlines=100
 
@@ -132,6 +174,7 @@ if !exists("did_falcon_syn_inits")
     HiLink falconComment          Comment
     HiLink falconCommentL         Comment
     HiLink falconConst            Constant
+    HiLink falconConstants        Constant
     HiLink falconOperator         Operator
     HiLink falconSymbol           Normal
     HiLink falconSpaceError       Error
@@ -153,3 +196,4 @@ endif
 let b:current_syntax = "falcon"
 
 " vim: set sw=4 sts=4 et tw=80 :
+