please tell me the necessary packages that I must use to get blue colored cross-referring to Fig.1 and Eq.(1). I want to change the color of Fig.1 from black to blue. Thank you very much in advance.
\documentclass[5p]{elsarticle}
\usepackage{lineno}
\modulolinenumbers[5]
\journal{Journal of \LaTeX\ Templates}
\usepackage{times}
\begin{document}
%\linenumbers
\section{Introduction}
Piezoelectric Fig.1 and Eq.(1) effect has been employed to a very great extent in many applications since its discovery by the Curie brothers.
\end{document}