这个问题与这篇文章相关：哥本哈根主题的定制。
我无法将框架标题的颜色更改为白色。我尝试过： \setbeamercolor*{frametitle}{fg=white}。
\documentclass[12pt]{beamer}
\usepackage[many]{tcolorbox}
\usetheme{Copenhagen}
\definecolor{myblue1}{RGB}{35,119,189}
\definecolor{myblue2}{RGB}{95,179,238}
\definecolor{myblue3}{RGB}{129,168,207}
\definecolor{myblue4}{RGB}{26,89,142}
\setbeamercolor*{structure}{fg=myblue1,bg=blue}
\setbeamercolor*{palette primary}{use=structure,fg=white,bg=structure.fg}
\setbeamercolor*{palette secondary}{use=structure,fg=white,bg=structure.fg!75!black}
\setbeamercolor*{palette tertiary}{use=structure,fg=white,bg=structure.fg!50!black}
\setbeamercolor*{palette quaternary}{fg=black,bg=white}
\setbeamercolor*{item projected}{fg=red,bg=myblue3!80}
\setbeamercolor*{block title example}{fg=white,bg=myblue4}
\setbeamercolor*{frametitle}{fg=white}
\setbeamertemplate{blocks}[rounded][shadow=true]
\makeatletter
\defbeamertemplate*{frametitle}{mydefault}[1][left]
{
\ifbeamercolorempty[bg]{frametitle}{}{\nointerlineskip}%
\nointerlineskip%
\@tempdima=\textwidth%
\advance\@tempdima by\beamer@leftmargin%
\advance\@tempdima by\beamer@rightmargin%
\begin{tcolorbox}[
enhanced,
outer arc=0pt,
arc=0pt,
boxrule=0pt,
top=0pt,
bottom=0pt,
enlarge left by=-\beamer@leftmargin,
enlarge right by=-\beamer@rightmargin,
width=\paperwidth,
nobeforeafter,
interior style={
left color=myblue2,
right color=white
},
shadow={0mm}{-0.4mm}{0mm}{black!60,opacity=0.6},
shadow={0mm}{-0.8mm}{0mm}{black!40,opacity=0.4},
]
\usebeamerfont{frametitle}%
\vbox{}\vskip-1ex%
\if@tempswa\else\csname beamer@fte#1\endcsname\fi%
\insertframetitle\par%
{%
\ifx\insertframesubtitle\@empty%
\else%
{\usebeamerfont{framesubtitle}\usebeamercolor[fg]{framesubtitle}\insertframesubtitle\strut\par}%
\fi
}%
\vskip-1ex%
\if@tempswa\else\vskip-.3cm\fi% set inside beamercolorbox... evil here...
\end{tcolorbox}%
}
\defbeamertemplate*{footline}{mysplit theme}
{%
\leavevmode%
\hbox{\begin{beamercolorbox}[wd=.5\paperwidth,ht=2.5ex,dp=1.125ex,leftskip=.3cm plus1fill,rightskip=.3cm]{author in head/foot}%
\usebeamerfont{author in head/foot}\insertshortauthor
\end{beamercolorbox}%
\begin{beamercolorbox}[wd=.5\paperwidth,ht=2.5ex,dp=1.125ex,leftskip=.3cm,rightskip=.3cm plus1fil]{title in head/foot}%
\usebeamerfont{title in head/foot}\insertshorttitle\hfill
\insertframenumber/\inserttotalframenumber\hspace*{0.5em}
\end{beamercolorbox}}%
\vskip0pt%
}
\makeatother
\title{The title of the paper}
\author{Subham Soni \and Sakthivel \and Syed Rabbani}
\date{\today}
\begin{document}
\begin{frame}
\maketitle
\end{frame}
\section{Propositional Argumentation Systems}
\subsection{Propositional Logic}
\begin{frame}
\frametitle{Logical consequences}
\begin{itemize}
\item First.
\item Second.
\item Third.
\begin{exampleblock}{Entailment Relation}
\begin{itemize}
\item First.
\item Second.
\end{itemize}
\end{exampleblock}
\item Fourth.
\end{itemize}
\end{frame}
\subsection{Argumentation Systems}
\begin{frame}
\frametitle{Logical consequences}
\end{frame}
\subsection{Probabilistic Argumentation Systems}
\begin{frame}
\frametitle{Logical consequences}
\end{frame}
\section{Argumentation Systems on Set Constraint Logic}
\begin{frame}
test
\end{frame}
\end{document}
答案1
\documentclass[12pt]{beamer}
\usepackage[many]{tcolorbox}
\usetheme{Copenhagen}
\definecolor{myblue1}{RGB}{35,119,189}
\definecolor{myblue2}{RGB}{95,179,238}
\definecolor{myblue3}{RGB}{129,168,207}
\definecolor{myblue4}{RGB}{26,89,142}
\setbeamercolor*{structure}{fg=myblue1,bg=blue}
\setbeamercolor*{palette primary}{use=structure,fg=white,bg=structure.fg}
\setbeamercolor*{palette secondary}{use=structure,fg=white,bg=structure.fg!75!black}
\setbeamercolor*{palette tertiary}{use=structure,fg=white,bg=structure.fg!50!black}
\setbeamercolor*{palette quaternary}{fg=black,bg=white}
\setbeamercolor*{item projected}{fg=red,bg=myblue3!80}
\setbeamercolor*{block title example}{fg=white,bg=myblue4}
\setbeamercolor*{frametitle}{fg=white}
\setbeamertemplate{blocks}[rounded][shadow=true]
\makeatletter
\defbeamertemplate*{frametitle}{mydefault}[1][left]
{
\ifbeamercolorempty[bg]{frametitle}{}{\nointerlineskip}%
\nointerlineskip%
\@tempdima=\textwidth%
\advance\@tempdima by\beamer@leftmargin%
\advance\@tempdima by\beamer@rightmargin%
\begin{tcolorbox}[
enhanced,
outer arc=0pt,
arc=0pt,
boxrule=0pt,
top=0pt,
bottom=0pt,
enlarge left by=-\beamer@leftmargin,
enlarge right by=-\beamer@rightmargin,
width=\paperwidth,
nobeforeafter,
interior style={
left color=myblue2,
right color=white
},
shadow={0mm}{-0.4mm}{0mm}{black!60,opacity=0.6},
shadow={0mm}{-0.8mm}{0mm}{black!40,opacity=0.4},
]
\usebeamerfont{frametitle}\usebeamercolor[fg]{frametitle}%
\vbox{}\vskip-1ex%
\if@tempswa\else\csname beamer@fte#1\endcsname\fi%
\insertframetitle\par%
{%
\ifx\insertframesubtitle\@empty%
\else%
{\usebeamerfont{framesubtitle}\usebeamercolor[fg]{framesubtitle}\insertframesubtitle\strut\par}%
\fi
}%
\vskip-1ex%
\if@tempswa\else\vskip-.3cm\fi% set inside beamercolorbox... evil here...
\end{tcolorbox}%
}
\defbeamertemplate*{footline}{mysplit theme}
{%
\leavevmode%
\hbox{\begin{beamercolorbox}[wd=.5\paperwidth,ht=2.5ex,dp=1.125ex,leftskip=.3cm plus1fill,rightskip=.3cm]{author in head/foot}%
\usebeamerfont{author in head/foot}\insertshortauthor
\end{beamercolorbox}%
\begin{beamercolorbox}[wd=.5\paperwidth,ht=2.5ex,dp=1.125ex,leftskip=.3cm,rightskip=.3cm plus1fil]{title in head/foot}%
\usebeamerfont{title in head/foot}\insertshorttitle\hfill
\insertframenumber/\inserttotalframenumber\hspace*{0.5em}
\end{beamercolorbox}}%
\vskip0pt%
}
\makeatother
\title{The title of the paper}
\author{Subham Soni \and Sakthivel \and Syed Rabbani}
\date{\today}
\begin{document}
\begin{frame}
\maketitle
\end{frame}
\section{Propositional Argumentation Systems}
\subsection{Propositional Logic}
\begin{frame}
\frametitle{Logical consequences}
\begin{itemize}
\item First.
\item Second.
\item Third.
\begin{exampleblock}{Entailment Relation}
\begin{itemize}
\item First.
\item Second.
\end{itemize}
\end{exampleblock}
\item Fourth.
\end{itemize}
\end{frame}
\subsection{Argumentation Systems}
\begin{frame}
\frametitle{Logical consequences}
\end{frame}
\subsection{Probabilistic Argumentation Systems}
\begin{frame}
\frametitle{Logical consequences}
\end{frame}
\section{Argumentation Systems on Set Constraint Logic}
\begin{frame}
test
\end{frame}
\end{document}
