\usepackage{color, soul}

% allow highlighting reference
\soulregister\cite7
\soulregister\ref7
\soulregister\pageref7

% comment out one of the two: 
\newcommand{\markasnew}[1]{\hl{#1}} % highlight
%\newcommand{\markasnew}[1]{{#1}}	  % don't highlight

% Use of new command: see http://en.wikibooks.org/wiki/LaTeX/Macros#New_commands
