\documentstyle[eclcolor]{j-article}

\title{Yet Another Method for Color \LaTeX}

\author{Hideki Isozaki}

\begin{document}

\maketitle

Black {\blue Blue {\red Red} Blue} Black

\colorboxsep=2pt
\bf
\unitlength=1cm

\colorbox{white}{black}{ABC}

\colorbox{white}{black}[4cm]{ABC}

\colorbox{white}{black}[4cm][r]{ABC}

\colorbox{white}{black}[4cm][l]{ABC}

\colorbox{white}{black}(4,0.7){ABC}



\end{document}
