" Change colors for vimdiff to make text readable.
 if &diff
   syn off
   hi clear

   " Magenta.
   " Text with no changes.
   highlight Normal term=none cterm=italic ctermfg=5 ctermbg=0

   " Green.
   " Text added; appears beside text-removed.
   highlight DiffAdd    term=bold,underline  cterm=bold ctermfg=2 ctermbg=0  gui=none  guifg=bg guibg=Red
   "
   " Red.
   " Text removed, namely "-----" indicator.
   highlight DiffDelete term=reverse   cterm=bold ctermfg=1 ctermbg=0  gui=none  guifg=bg guibg=Red

   " White
   " Text of the line with change.
   highlight DiffChange term=underline cterm=none ctermfg=7 ctermbg=0  gui=none  guifg=bg guibg=Red
   "
   " Yellow.
   " Changed text.
   highlight DiffText   term=bold      cterm=bold ctermfg=3 ctermbg=0  gui=none  guifg=bg guibg=Red
 endif