Color de corchetes de Natbib

Question

Cuando se usa Bibtex con Natbib y corchetes, ¿alguien sabe cómo cambiar el color de los corchetes?

Answer 1

Puedes usar \bibpuncty \textcolor:

\begin{filecontents*}{uvwxyz.bib}
@ARTICLE{example,
  author = {Felix Lindlar and Armin Zimmermann},
  title = {A code Generation Tool for Embedded Automotive Systems Based on Finite State Machines},
  journal = {IEEE International Conference on Industrial Informatics},
  year = {2008}
}
\end{filecontents*}
\documentclass{article}
\usepackage{natbib}
\usepackage{xcolor}

\bibpunct{\textcolor{red}{[}}{\textcolor{red}{]}}{,}{a}{}{;}

\begin{document}

\cite{example}
\bibliographystyle{plainnat}
\bibliography{uvwxyz}

\end{document} 

Answer 2

Adaptando lo anterior, esto funciona:

\definecolor{bleu_cite}{RGB}{34,111,212} % pure blue: {0,0,128}, light blue:{80,135,208}
\usepackage[
colorlinks=true,        
allcolors = black,  
citecolor=bleu_cite
]{hyperref} 
\usepackage{natbib}
\bibpunct{\textcolor{bleu_cite}{[}}{\textcolor{bleu_cite}{]}}{,}{a}{}{;}