我有一个 LaTeX 投影仪演示文稿，我用它\setbeamercolor{math text}来增强可读性，效果很好。不幸的是，所有\text{}内容\intertext{}都是彩色的，看起来不太好看。有什么补救措施吗？
梅威瑟：
\documentclass{beamer}
\usepackage{xcolor}
\usepackage{amsmath}
\setbeamercolor{math text}{fg=blue}
\begin{document}
\begin{frame}
This is a term in math mode: $a^2 + b^2 = c^2$.
This is color inside of \texttt{align*}, but the text is colored as well:
\begin{align*}
a^2 + b^2 = c^2 && \text{(Pythagoras)}. \\
\intertext{Even worse, the intertext is colored as well:}
a^1 + b^1 = c^1 && \text{(me)}.
\end{align*}
\end{frame}
\end{document}
它产生以下输出：
更新：@Mico 提供了一个很好的解决方案，效果很好，甚至适用于 inline-math \intertext，但它也会为表格着色！可以避免吗？
另外，\text确实切换回黑色，但数学\text保持黑色。看看\text里面$x$的\underbrace。
以下是更新的 MWE：
\documentclass{beamer}
%\setbeamercolor{math text}{fg=blue}
%\newcommand\blackintertext[1]{\intertext{\textcolor{black}{#1}}}
\everymath=\expandafter{\the\everymath\color{blue}}
\let\origtext\text
\renewcommand\text[1]{\origtext{\textcolor{black}{#1}}}
\begin{document}
\begin{frame}
This is a term in inline-math mode: $1+1=2$.
Displayed equations are colored as well \dots
\begin{align*}
\underbrace{a^2 + b^2}_{\text{magic $x$}} &= c^2 \tag{Pythagoras} \\
\intertext{\dots\ but, happily, intertext material is no longer colored. Even $\pi \approx 3.14$ is colored.}
e^{i\pi} + 1 &= 0 \tag{Euler}
\end{align*}
\begin{tabular}{l|l}
What & about \\
\hline
a & table?
\end{tabular}
\end{frame}
\end{document}
它看起来是这样的：
答案1
我建议你更换
\setbeamercolor{math text}{fg=blue}
和
\everymath=\expandafter{\the\everymath\color{blue}}
此外，要排版方程式“标签”，请使用\tag宏。
为了“修复”宏的行为\text，即使它以黑色输出其参数，我建议您在序言中添加以下两个指令：
\let\origtext\text
\renewcommand\text[1]{\origtext{\textcolor{black}{#1}}}
以下是生成如上所示截图的代码：
\documentclass{beamer}
%\setbeamercolor{math text}{fg=blue}
\everymath=\expandafter{\the\everymath\color{blue}}
\begin{document}
\begin{frame}
This is a term in inline-math mode: $1+1=2$.
Displayed equations are colored as well \dots
\begin{gather*}
a^2 + b^2 = c^2 \tag{Pythagoras} \\
\intertext{\dots\ but, happily, intertext material is no longer colored.}
e^{i\pi} + 1 = 0 \tag{Euler}
\end{gather*}
\end{frame}
\end{document}