请问如何更改block颜色？

[Amethystine-Yuan]

看到beamer中有block alertblock exampleblock三种块，请问如何更改这些块的配色？
尝试了在导言区和frame里用 \setbeamercolor 但并不起作用，是 beamer 主题覆盖了颜色限制吗？
谢谢！

[LogCreative]

block 的颜色是在这里设置的，默认是跟随主题色而变。

SJTUBeamer/beamercolorthemesjtubeamer.sty

Lines 64 to 74 in 1844558

	\setbeamercolor{block title}{fg=white,bg=cprimary!90}
	\setbeamercolor{block title alerted}{use=alerted text,
	fg=white,bg=csecondary}
	\setbeamercolor{block title example}{use=example text,
	fg=cquanternary,bg=ctertiary}
	\setbeamercolor{block body}{parent=normal text,use=block title,
	bg=block title.bg!15}
	\setbeamercolor{block body alerted}{parent=normal text,
	use=block title alerted,bg=block title alerted.bg!15}
	\setbeamercolor{block body example}{parent=normal text,
	use=block title example,bg=block title example.bg!15}

那么在 \usetheme{sjtubeamer} 之后使用类似的语句就可以达到更改颜色的效果：

% 区块标题色
\setbeamercolor{block title}{fg=white,bg=blue}
\setbeamercolor{block title alerted}{use=alerted text,
  fg=white,bg=green}
\setbeamercolor{block title example}{use=example text,
  fg=black!20,bg=black!30}
% 区块背景色
\setbeamercolor{block body}{parent=normal text,use=block title,
  bg=block title.bg!15}
\setbeamercolor{block body alerted}{parent=normal text,
  use=block title alerted,bg=block title alerted.bg!15}
\setbeamercolor{block body example}{parent=normal text,
  use=block title example,bg=block title example.bg!15}

可能是你没有设置正确的键，可以检查一下。

[Amethystine-Yuan]

非常感谢！