LaTeX的Beamer元素控制

beameruserguide.pdf中给出了Beamer完全的说明。研究相应的文件，如beamerthemeMadrid.sty，也可以在sty中修改

去除Beamer中的头部、导航条、脚部

headline

\setbeamertemplate{headline}{} %清空头部

%%减少正文与头部的距离
\addtobeamertemplate{frametitle}{}{\vspace*{-0.8cm}}

navigator bar

\beamertemplatenavigationsymbolsempty %Remove the Navigation Bar
or
\setbeamertemplate{navigation symbols}{}

footline

\setbeamertemplate{footline}[page number]{}

正文部分

定理、定义等环境的编号

\setbeamertemplate{theorems}[numbered]

or
\setbeamertemplate{theorems}[ams style]

or use the envcountsect class option
\documentclass[envcountsect]{beamer}

theorems, definitions, and so on to be numbered locally to each section (by default they are numbered consecutively throughout the presentation).

不同的block使用不同的颜色，比如定理、定义、证明等环境的标题和正文有不同的颜色(via1，简单情况可参看via2)

\documentclass{beamer}

\useinnertheme[shadow=true]{rounded}

\usepackage{etoolbox}

\setbeamercolor{block title}{use=structure,fg=structure.fg,bg=structure.fg!20!bg}
\setbeamercolor{block body}{parent=normal text,use=block title,bg=block title.bg!50!bg}

\setbeamercolor{block title example}{use=example text,fg=example text.fg,bg=example text.fg!20!bg}
\setbeamercolor{block body example}{parent=normal text,use=block title example,bg=block title example.bg!50!bg}

\addtobeamertemplate{proof begin}{%
    \setbeamercolor{block title}{fg=black,bg=red!50!white}
    \setbeamercolor{block body}{fg=red, bg=red!30!white}
}{}

\BeforeBeginEnvironment{theorem}{
    \setbeamercolor{block title}{fg=black,bg=orange!50!white}
    \setbeamercolor{block body}{fg=orange, bg=orange!30!white}
}
\AfterEndEnvironment{theorem}{
 \setbeamercolor{block title}{use=structure,fg=structure.fg,bg=structure.fg!20!bg}
 \setbeamercolor{block body}{parent=normal text,use=block title,bg=block title.bg!50!bg, fg=black}
}

\BeforeBeginEnvironment{definition}{%
    \setbeamercolor{block title}{fg=black,bg=pink!50!white}
    \setbeamercolor{block body}{fg=pink, bg=pink!30!white}
}
\AfterEndEnvironment{definition}{
 \setbeamercolor{block title}{use=structure,fg=structure.fg,bg=structure.fg!20!bg}
 \setbeamercolor{block body}{parent=normal text,use=block title,bg=block title.bg!50!bg, fg=black}
}

\begin{document}
\begin{frame}
    \begin{block}{My block}
        A block.
    \end{block}

    \begin{definition}[My definition]
        A definition.
    \end{definition}

    \begin{theorem}[My theorem]
        A theorem.
    \end{theorem}
    \begin{proof}[My proof]
        A proof.
    \end{proof}
    \begin{example}[My example]
        An example.
    \end{example}

    \begin{block}{My block}
        A block.
    \end{block}    

\end{frame}
\end{document}