如何更改标题（第一个）框架中作者文本的颜色？

Question

\documentclass[T]{beamer}

\usetheme{Frankfurt}
\usecolortheme{orchid}
\usefonttheme{structuresmallcapsserif}
\usefonttheme{serif}
\usepackage{multicol}
\usepackage{graphicx}

\title{Example Presentation}
\author{Author 1\\Author 2}
\date{\today}

\begin{document}

{\usebackgroundtemplate
{\includegraphics[width=\paperwidth,height=\paperheight]{caestitlepage}}
\begin{frame}
    \titlepage
\end{frame}

\end{document}

为了使“作者文本”变成白色，我需要做哪些更改？

Answer 1

您只需使用适当的颜色模板（author在本例中）；例如：

\setbeamercolor{author}{fg=white} 

完整示例（带有虚拟背景）：

\documentclass[T]{beamer}
\usepackage{lmodern} % for font size substitution
\usetheme{Frankfurt}
\usecolortheme{orchid}
\usefonttheme{structuresmallcapsserif}
\usefonttheme{serif}
\usepackage{multicol}
\usepackage{tikz} %for dummy background

\title{Example Presentation}
\setbeamercolor{author}{fg=white}
\author{Author 1\\ Author 2}
\date{\today}

\begin{document}

\setbeamertemplate{background}{\tikz\fill[blue,opacity=0.4](0,0)rectangle(\paperwidth,\paperheight);]}

%{\usebackgroundtemplate
%{\includegraphics[width=\paperwidth,height=\paperheight]{caestitlepage}}

\begin{frame}
    \titlepage
\end{frame}

\end{document}

结果：

实际上，percusse 的建议也很好；确实：

\documentclass[T]{beamer}
\usepackage{lmodern} % for font size substitution
\usetheme{Frankfurt}
\usecolortheme{orchid}
\usefonttheme{structuresmallcapsserif}
\usefonttheme{serif}
\usepackage{multicol}
\usepackage{tikz} %for dummy background

\title{Example Presentation}
\author{\textcolor{white}{Author 1}\\ \textcolor{white}{Author 2}}
\date{\today}

\begin{document}

\setbeamertemplate{background}{\tikz\fill[blue,opacity=0.4](0,0)rectangle(\paperwidth,\paperheight);]}

%{\usebackgroundtemplate
%{\includegraphics[width=\paperwidth,height=\paperheight]{caestitlepage}}

\begin{frame}
    \titlepage
\end{frame}

\end{document}

提供与上面报道相同的图片。