How color keys with showkeys with non-gray color?

Question

Nowhere have I been able to see an example of using a color other than a shade of gray to color the labels revealed in LaTeX by \usepackage{showkeys}.

For example, suppose I want labels to be revealed in a (light) green and the refs to those labels to be labeled in a (light) red or, better yet, a (light) pink. How does one do this?

I'm well aware that \usepackage{show keys} "colors" the keys — but unfortunately the color is always gray. How change that?

Answer 1

The package showkeys uses following code

\let\SK@refcolor\relax
\let\SK@labelcolor\relax
\DeclareOption{color}{\AtEndOfPackage{%
  \RequirePackage{color}%
  \definecolor{refkey}{gray}{.75}%
  \definecolor{labelkey}{gray}{.75}%
  \def\SK@refcolor{\color{refkey}}%
  \def\SK@labelcolor{\color{labelkey}}}}

in order to set the colour. refkey and labelkey are both set to a light gray 'colour'. It is sufficient to use a different definition of the refkey and labelkey colours.

\documentclass{article}

\usepackage[color]{showkeys}

\definecolor{refkey}{rgb}{0,0,1}
\definecolor{labelkey}{rgb}{0,1,0}
\begin{document}
\section{My nice section}\label{foosection}


In \ref{foosection} we saw that\dots
\end{document}