标题格式 - 短标题的间距和颜色

Question

我对脚注问题感到困惑 - 我找不到答案。

1. 我怎样才能在我的姓名和所属机构（左下角）之间留出空格？
2. 如何将“简介和概述”（中间）的颜色更改为与脚注中其余文本相同的颜色？

我的脚注有以下代码：

\usetheme{default}
\usecolortheme{default}
\usenavigationsymbolstemplate{}

\defbeamertemplate*{footline}{infolines theme}
{
  \leavevmode%
  \hbox{%
  \begin{beamercolorbox}[wd=.333333\paperwidth,ht=2.25ex,dp=1ex,center]{author in head/foot}%
    \usebeamerfont{author in head/foot}\insertshortauthor(\insertshortinstitute)
  \end{beamercolorbox}%
  \begin{beamercolorbox}[wd=.333333\paperwidth,ht=2.25ex,dp=1ex,center]{title in head/foot}%
    \usebeamerfont{title in head/foot}\insertshorttitle
  \end{beamercolorbox}%
  \begin{beamercolorbox}[wd=.333333\paperwidth,ht=2.25ex,dp=1ex,right]{date in head/foot}%
    \usebeamerfont{date in head/foot}\insertshortdate{}\hspace*{2em}
    \insertframenumber{} / \inserttotalframenumber\hspace*{2ex}
  \end{beamercolorbox}}%
  \vskip0pt%
}

\input{tcilatex}
\begin{document}

\title[Introduction and Overview]{Econ 196, Financial Crises - Morals and
Markets}
\author[Eric Fischer]{Eric Fischer}
\institute[UCSC]{}
\date{March 31, 2015}
\maketitle

Answer 1

1. 正如前面提到的标题格式 - 短标题的间距和颜色你可以插入一个空格~

2. 设置标题的颜色：\setbeamercolor{title in head/foot}{fg=structure.fg}

完整 MWE：

\documentclass{beamer}

\usetheme{default}
\usecolortheme{default}
\usenavigationsymbolstemplate{}

\defbeamertemplate*{footline}{infolines theme}
{
  \leavevmode%
  \hbox{%
  \begin{beamercolorbox}[wd=.333333\paperwidth,ht=2.25ex,dp=1ex,center]{author in head/foot}%
    \usebeamerfont{author in head/foot}\insertshortauthor~(\insertshortinstitute)
  \end{beamercolorbox}%
  \begin{beamercolorbox}[wd=.333333\paperwidth,ht=2.25ex,dp=1ex,center]{title in head/foot}%
    \usebeamerfont{title in head/foot}\insertshorttitle
  \end{beamercolorbox}%
  \begin{beamercolorbox}[wd=.333333\paperwidth,ht=2.25ex,dp=1ex,right]{date in head/foot}%
    \usebeamerfont{date in head/foot}\insertshortdate{}\hspace*{2em}
    \insertframenumber{} / \inserttotalframenumber\hspace*{2ex}
  \end{beamercolorbox}}%
  \vskip0pt%
}

\setbeamercolor{title in head/foot}{fg=structure.fg}

\begin{document}

\title[Introduction and Overview]{Econ 196, Financial Crises - Morals and
Markets}
\author[Eric Fischer]{Eric Fischer}
\institute[UCSC]{}
\date{March 31, 2015}
\maketitle

\end{document}