长得还不错的listing设置（不知道从哪抄来的）

\DeclareCaptionFont{white}{\color{white}}
\DeclareCaptionFormat{listing}{\colorbox[cmyk]{0.43, 0.35, 0.35,0.01}{\parbox{\linewidth}{\hspace{15pt}#1#2#3}}}
\captionsetup[lstlisting]{format=listing,labelfont=white,textfont=white,singlelinecheck=false,margin=0pt,font={bf,footnotesize}}

\lstset{
    basicstyle=\small\ttfamily,
    numbers=left,
    numbersep=5pt,
    numberstyle=\ttfamily\color{gray},
    tabsize=4,
    extendedchars=true,
    breaklines=true,
    frame=b,
    showspaces=false,
    showtabs=false,
    xleftmargin=17pt,
    framexleftmargin=17pt,
    framexrightmargin=6pt,
    framexbottommargin=4pt,
    escapechar=`,
    showstringspaces=false,
}