\ProvidesFile{color.cfg}%
  [2001/08/31 v1.1 color configuration of teTeX/TeXLive]

% Select an appropriate default driver
\begingroup
  \chardef\x=0 %
  % check pdfTeX
  \@ifundefined{pdfoutput}{}{%
    \ifcase\pdfoutput
    \else
      \chardef\x=1 %
    \fi
  }%
  % check VTeX
  \@ifundefined{OpMode}{}{%
    \chardef\x=2 %
  }%
\expandafter\endgroup
\ifcase\x
  % default case
  \ExecuteOptions{dvips}%
\or
  % pdfTeX is running in pdf mode
  \ExecuteOptions{pdftex}%
\else
  % VTeX is running
  \ExecuteOptions{vtex}%
\fi
\endinput