How to change a color of a specific citation?

Question

I want most of my citation to be blue in color. So I used

\usepackage{hyperref}
\hypersetup{colorlinks,linkcolor={blue},citecolor={blue},urlcolor={red}}  

But I need some of my citation in a different color(say yellow). I tried

{\color{yellow} \cite{eg} }

to change the specific citation brutally but it doesn't work. What should I do.

Answer 1

... \hypersetup{citecolor=yellow}\cite{eg}\hypersetup{citecolor=blue} ...

should do.

Answer 2

I like my option slightly better because you don't need to worry about the previous colour:

\newcommand{\citeColored}[2]{{\hypersetup{citecolor=#1}\cite{‌​#2}}}