\usepackage[margin=2.5cm]{geometry}
\usepackage{amsmath}
\usepackage[frenchb]{babel}
-\usepackage{xcolor}
\usepackage{multicol}
\usepackage{listings}
\usepackage{pifont}
\usepackage{mflogo}
\usepackage{longtable}
\usepackage{url}
+\usepackage{xcolor}
\definecolor{cPG}{RGB}{235, 227, 150}
\definecolor{link}{RGB}{150, 81, 0}
-\usepackage[colorlinks, linkcolor=link]{hyperref}
+\definecolor{url}{rgb}{0, .3, .03}
+\usepackage[colorlinks, linkcolor=link,urlcolor=url]{hyperref}
\usetikzlibrary{decorations.pathmorphing}
\usetikzlibrary{shapes}
\definecolor{fbase}{gray}{0.95}