diff --git a/lectures/latexkurs.cls b/lectures/latexkurs.cls
index 7753d24..2971105 100644
--- a/lectures/latexkurs.cls
+++ b/lectures/latexkurs.cls
@@ -32,20 +32,94 @@
 %%% include variable macros
 
 \input{course-details}
-\titlegraphic{\ccLogo \ccAttribution \ccShareAlike}
 
 %%% theme
 
-\usetikzlibrary{shapes.multipart}
-\usetheme{CambridgeUS}
+\definecolor{fsfwblue}{RGB}{40,173,184}
+\definecolor{fsfwpurple}{RGB}{101,75,199}
+\definecolor{fsfwgreen}{RGB}{107,187,0}
+\definecolor{fsfwgray}{RGB}{240,240,240}
+
+\useinnertheme[shadow=true]{rounded}
+\useoutertheme{infolines}
+
+\setbeamercolor{section in toc}{fg=black,bg=white}
+\setbeamercolor{alerted text}{fg=fsfwgreen!80!gray}
+\setbeamercolor*{palette primary}{fg=fsfwpurple!60!black,bg=fsfwblue!60!white}
+\setbeamercolor*{palette secondary}{fg=fsfwpurple!70!black,bg=fsfwgray!15!white}
+\setbeamercolor*{palette tertiary}{bg=fsfwpurple!80!black,fg=fsfwgray!10!white}
+\setbeamercolor*{palette quaternary}{fg=fsfwpurple,bg=fsfwgray!5!white}
+
+\setbeamercolor*{sidebar}{fg=fsfwpurple,bg=gray!15!white}
+
+\setbeamercolor*{palette sidebar primary}{fg=fsfwpurple!10!black}
+\setbeamercolor*{palette sidebar secondary}{fg=white}
+\setbeamercolor*{palette sidebar tertiary}{fg=fsfwpurple!50!black}
+\setbeamercolor*{palette sidebar quaternary}{fg=fsfwgray!10!white}
+
+\setbeamercolor{titlelike}{parent=palette primary,bg=fsfwgreen}
+\setbeamercolor{frametitle}{bg=fsfwblue,fg=white}
+\setbeamerfont{frametitle}{series=\bfseries}
+\setbeamercolor{frametitle right}{bg=fsfwgray!60!white}
+
+\setbeamercolor*{separation line}{}
+\setbeamercolor*{fine separation line}{}
+
+\setbeamercolor{data in head/foot}{fg=white}
+
+\setbeamerfont{block title}{size={}}
+\setbeamercolor{titlelike}{parent=structure,bg=white}
+
+\setbeamertemplate{title page}{{
+    \setbeamercolor{block body}{bg=fsfwgreen,fg=white}
+    \setbeamertemplate{blocks}[rounded][shadow=true]
+    \begin{center}
+
+      \vspace*{2\bigskipamount}
+
+      \begin{block}{}
+        \centering
+        \vspace*{0.5\baselineskip}
+        {\LARGE \textbf{\inserttitle}}\\
+
+        \medskip
+
+        {\Large \textbf{\insertsubtitle}}
+        \vspace*{0.5\baselineskip}
+      \end{block}
+
+      \bigskip
+
+      {\ccLogo~\ccAttribution~\ccShareAlike}
+      \bigskip
+
+      \insertauthor
+
+      \smallskip
+
+      \insertdate
+    \end{center}
+
+  }}
+
+\setbeamertemplate{headline}{}
+\setbeamercolor{footline}{bg=fsfwblue,fg=white}
+\setbeamertemplate{footline}{
+  \hbox{%
+    \begin{beamercolorbox}[wd=\paperwidth,ht=2.25ex,dp=1ex]{footline}
+      ~
+    \end{beamercolorbox}%
+  }
+}
+
 \setbeamertemplate{blocks}[rounded][shadow=false]
+\setbeamercolor{block title}{fg=fsfwpurple}
+\usetikzlibrary{shapes.multipart}
 \setbeamertemplate{items}{\raisebox{0.3ex}{%
     \tikz[scale=0.13] \draw[fill] (0,0) -- (0,1) -- (0.9,0.5) -- cycle;}}
-\usetikzlibrary{arrows}
-\tikzset{>={stealth'[sep]}}
 \setbeamertemplate{navigation symbols}{}
-\setbeamertemplate{footline}{}
 \setbeamerfont{title}{series=\bfseries}
+
 \defbeamertemplate{block alerted begin}{bends}{%
   \begin{columns}
     \begin{column}{0.05\linewidth}
@@ -62,21 +136,33 @@
   \end{columns}
 }
 
+\usetikzlibrary{arrows}
+\tikzset{>={stealth'[sep]}}
 
-\AtBeginSection{
+\AtBeginSection{{
   \setbeamertemplate{blocks}[rounded][shadow=true]
-  \begin{frame}[plain]
+  \setbeamercolor{block body}{bg=fsfwgreen,fg=white}
+  \begin{frame}{~}
     \begin{block}{}
       \begin{center}
-        \textcolor{darkred}{\textbf{\Large \strut\smash{\insertpart}}}\\[1ex]
-        \textcolor{blue!70!black}{\strut\smash{\insertsection}}
+        \Large\strut\smash{\textbf{\insertsection}}
       \end{center}
     \end{block}
   \end{frame}
-  \setbeamertemplate{blocks}[rounded][shadow=false]
-  \setbeamertemplate{block alerted begin}[bends]
-  \setbeamertemplate{block alerted end}[bends]
-}
+}}
+
+\AtBeginDocument{{%
+    \addtobeamertemplate{frametitle}{\vspace*{-\headheight}}{}
+    \frame{\usebeamertemplate{title page}}
+  }}
+
+%%% make beamer always use the frametitle template, even if frametitle is empty
+
+% https://tex.stackexchange.com/questions/133698/calling-beamertemplate-frametitle-even-for-empty-frametitle
+
+\RequirePackage{etoolbox}
+\patchcmd{\endbeamer@frameslide}{\ifx\beamer@frametitle\@empty}{\iffalse}{}{\errmessage{failed to patch}}
+
 
 %%% misc
 
@@ -102,6 +188,3 @@
     RequirePackage,
   },
 }
-
-\AtBeginDocument{\frame[plain]{\maketitle}}
-