"some amendments to the standard tex.vim
 "put in your directory: ~/.vim/after/syntax 
 " author: Brian Fiedler
 " I wanted gvim to recognize the \be as \begin{equation} and \bea as \begin{equationarray}.
 " Also, I wanted a cyan background to highlight sections.
 "
syn cluster texMathZones add=texMathZoneZ,texMathZoneZ2
 syn region texMathZoneZ	matchgroup=Delimiter start="\\be\s*$"	matchgroup=Delimiter end="\\ee\s*$" end="%stopzone"	keepend contains=@texMathZoneGroup
 syn region texMathZoneZ2 matchgroup=Delimiter start="\\bea\s*$"	matchgroup=Delimiter end="\\eea\s*$" end="%stopzone"	keepend contains=@texMathZoneGroup
 syn sync match texSyncMathZoneZ	grouphere texMathZoneZ	"\\\be\s*$"
 syn sync match texSyncMathZoneZ2	grouphere texMathZoneZ2	"\\\bea\s*$"
 syn sync match texSyncMathZoneZ	groupthere NONE	"\\\ee\s*$"
 syn sync match texSyncMathZoneZ2	groupthere NONE	"\\\eea\s*$"
  hi link texMathZoneZ		texMath
  hi link texMathZoneZ2		texMath
" highlight begin{section} etc. : 
  highlight texSection  ctermfg=Red guifg=Black guibg=Cyan