diff for vim syntax highlighting for perl, to use colors instead of \ and "

184,186c184,187
< syn match  perlSpecialString  "\\\%(\o\{1,3}\|x\%({\x\+}\|\x\{1,2}\)\|c.\|[^cx]\)" contained extend
< syn match  perlSpecialStringU2    "\\." extend contained contains=NONE
< syn match  perlSpecialStringU "\\\\" contained
---
> syn match  perlSpecialString  "\\\%(\o\{1,3}\|x\%({\x\+}\|\x\{1,2}\)\|c.\|[^cx]\)" contained contains=perlEsc extend
> syn match  perlSpecialStringU2    "\\." extend contained contains=perlEsc
> syn match  perlSpecialStringU "\\\\" contained conceal cchar=\
> syn match  perlEsc        "\\" conceal contained
302,303c303,304
< syn region perlStringUnexpanded   matchgroup=perlStringStartEnd start="'" end="'" contains=@perlInterpSQ keepend extend conceal
< syn region perlString     matchgroup=perlStringStartEnd start=+"+  end=+"+ contains=@perlInterpDQ keepend extend conceal
---
> syn region perlStringUnexpanded   matchgroup=perlStringStartEnd start="'" end="'" contains=@perlInterpSQ keepend extend concealends
> syn region perlString     matchgroup=perlStringStartEnd start=+"+  end=+"+ contains=@perlInterpDQ keepend extend concealends
515c516
< hi def link perlString            String
---
> hi def perlString         ctermbg=magenta ctermfg=black
604c605
< hi def link perlSpecialString     perlSpecial
---
> hi def perlSpecialString      term=bold ctermfg=green
626c627
< hi def link perlSpecialStringU2   perlString
---
> hi def link perlSpecialStringU2   perlSpecialString
654a656,657
>
> set conceallevel=2