How can I define a command for urls using hyperref

Question

I know I can use the package hyperref for urls, but I want is to create a definition that uses this and assigns a color, for example

\c{url}{Something}

would write Something in crimson color linked to the url (and assume default urls aren't in crimson)

Answer 1

You can use hyperref options, and locally modify it when needed.

\documentclass{article}

    \usepackage[colorlinks=true,urlcolor=magenta]{hyperref}

    \newcommand{\myhref}[2]
        {\hypersetup{urlcolor=blue}%
         \href{#1}{#2}%
         \hypersetup{urlcolor=magenta}%
        }

\begin{document}
    Here is \href{http://www.myurl.com}{my link}.

    Here is \myhref{http://www.myurl.com}{my special link}.

    And here,  \href{http://www.myurl.com}{another normal link}.
\end{document}