\listfiles
\documentclass{jarticle}
\usepackage{ulem}
\usepackage{color}

\definecolor{lightgray}{rgb}{0.75,0.75,0.75}
\definecolor{darkgray}{rgb}{0.25,0.25,0.25}

\begin{document}

\textcolor{red}{\uline{\textcolor{black}{important}}}
\textcolor{red}{\uline{\textcolor{black}{重要}}}
\uline{重要}

\textcolor{blue}{\uuline{\textcolor{black}{urgent}}}
\textcolor{blue}{\uuline{\textcolor{lightgray}{緊急}}}
\uuline{緊急}

\textcolor{yellow}{\uwave{\textcolor{black}{boat}}}
\textcolor{yellow}{\uwave{\textcolor{black}{ボート}}}
\uwave{ボート}

\textcolor{green}{\sout{\textcolor{black}{wrong}}}
\textcolor{green}{\sout{\textcolor{darkgray}{間違い}}}
\sout{間違い}

\textcolor{red}{\xout{\textcolor{black}{removed}}}
\textcolor{red}{\xout{\textcolor{black}{削除}}}
\xout{削除}

\end{document}
