diff --git a/beamercolorthemeaptero.sty b/beamercolorthemeaptero.sty
index 0a3b67b..bb0151b 100644
--- a/beamercolorthemeaptero.sty
+++ b/beamercolorthemeaptero.sty
@@ -37,7 +37,7 @@
 % inner colors:
 
 \setbeamercolor{normal text}{fg=black, bg=}
-\setbeamercolor{math text}{parent={normal text}}
+%\setbeamercolor{math text}{parent={normal text}}  % this kill coloring of \url{}
 
 \setbeamercolor{structure}{fg=blue}
 \setbeamercolor{alerted text}{fg=red}
@@ -87,6 +87,10 @@
 \setbeamercolor{section name separator}{parent={section name}}
 \setbeamercolor{section title}{parent={titlelike}}
 
+\setbeamercolor{subsection name}{parent={titlelike}}
+\setbeamercolor{subsection name separator}{parent={section name}}
+\setbeamercolor{subsection title}{parent={titlelike}}
+
 % outer colors:
 
 \setbeamercolor{background}{bg=}
@@ -97,7 +101,7 @@
 
 % hyper ref colors:
 
-\hypersetup{colorlinks=true, allcolors=black, urlcolor=blue}
+\hypersetup{colorlinks=true, allcolors=blue}
 
 \mode
 <all>
diff --git a/beamercolorthemeut.sty b/beamercolorthemeut.sty
index aee8802..e76a743 100644
--- a/beamercolorthemeut.sty
+++ b/beamercolorthemeut.sty
@@ -33,7 +33,7 @@
 % inner colors:
 
 \setbeamercolor{normal text}{fg=utblack, bg=}
-\setbeamercolor{math text}{parent={normal text}}
+%\setbeamercolor{math text}{parent={normal text}}  % this kills coloring of \url{}
 
 \setbeamercolor{structure}{fg=utblue}
 \setbeamercolor{alerted text}{fg=utred}
@@ -79,6 +79,10 @@
 \setbeamercolor{section name separator}{fg=utgold}
 \setbeamercolor{section title}{parent={titlelike}}
 
+\setbeamercolor{subsection name}{parent={titlelike}}
+\setbeamercolor{subsection name separator}{fg=utgold}
+\setbeamercolor{subsection title}{parent={titlelike}}
+
 % outer colors:
 
 \setbeamercolor{background}{bg=}
@@ -89,7 +93,7 @@
 
 % hyper ref colors:
 
-\hypersetup{colorlinks=true, allcolors=utblack, urlcolor=blue}
+\hypersetup{colorlinks=true, allcolors=utblue}
 
 \mode
 <all>
diff --git a/beamerthemelines.sty b/beamerthemelines.sty
index b85cc56..c159289 100644
--- a/beamerthemelines.sty
+++ b/beamerthemelines.sty
@@ -116,7 +116,7 @@
   \usebeamertemplate{footline line}%
   \begin{beamercolorbox}[wd=1\paperwidth,dp=1.2ex,ht=2.8ex,sep=0pt,colsep=0pt,colsep*=0pt,%
     leftskip=1\beamer@leftmargin,rightskip=1\beamer@rightmargin]{footline}
-    \hypersetup{allcolors=.}%
+    \hypersetup{linkcolor=}%
     \newif\if@tempsep%
     \@tempsepfalse%
     % author:
@@ -426,8 +426,9 @@
 
 %%%%% section page: left
 
-\defbeamertemplate{section page}{left}%
+\defbeamertemplate{section page}{left}[1][0.3\textheight]
 {
+  \vspace{#1}%
   \begin{columns}[t,onlytextwidth]
     \begin{column}{0.1\textwidth}
       \usebeamerfont{section name}%
@@ -437,21 +438,62 @@
     \end{column}
     \begin{column}{0.9\textwidth}
       \usebeamerfont{section title}%
-      {\usebeamercolor[fg]{section title}\hypersetup{allcolors=.}\insertsection}%
+      {\usebeamercolor[fg]{section title}\hypersetup{linkcolor=}\insertsection}%
     \end{column}
   \end{columns}
 }
 
-\setbeamertemplate{section page}[left]
+\setbeamertemplate{section page}[left][0.3\textheight]
 
 
 %%%%% start each section with a special slide:
 
 \AtBeginSection{
-  \frame[plain,c]{\sectionpage}
+  \frame[plain]{\sectionpage}
 }
 
 
+%%%%% subsection page %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+
+% subsection page separator: space
+
+\defbeamertemplate{subsection name separator}{space}{}
+
+% subsection page separator: text
+
+\defbeamertemplate{subsection name separator}{text}[1][1pt]%
+{
+  {\usebeamercolor[fg]{subsection name separator}
+    \rule[-0.5ex]{#1}{2.4ex}}
+}
+
+\setbeamertemplate{subsection name separator}[text][1pt]
+
+
+%%%%% subsection page: left
+
+\defbeamertemplate{subsection page}{left}[1][0.3\textheight]%
+{
+  \usebeamertemplate{section page}
+  \vspace{2ex}
+  \begin{columns}[t,onlytextwidth]
+    \begin{column}{0.1\textwidth}
+      \raggedleft%
+      \usebeamerfont{subsection name}%
+      {\usebeamercolor[fg]{subsection name}%
+        \makebox[0.5\linewidth][r]{\insertsubsectionnumber}%
+        \makebox[0.5\linewidth][c]{\usebeamertemplate{subsection name separator}}}%
+    \end{column}
+    \begin{column}{0.9\textwidth}
+      \usebeamerfont{subsection title}%
+      {\usebeamercolor[fg]{subsection title}\hypersetup{linkcolor=}\insertsubsection}%
+    \end{column}
+  \end{columns}
+}
+
+\setbeamertemplate{subsection page}[left][0.3\textheight]
+
+
 %%%%% fonts %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 
 \renewcommand{\familydefault}{\sfdefault}
@@ -466,6 +508,8 @@
 
 \setbeamerfont*{section title}{size=\huge}
 \setbeamerfont*{section name}{size=\huge}
+\setbeamerfont*{subsection title}{size=\Large}
+\setbeamerfont*{subsection name}{size=\Large}
 
 \setbeamerfont{footline}{size=\footnotesize}
 
diff --git a/beamerthemeut.sty b/beamerthemeut.sty
index 458db1b..a45734d 100644
--- a/beamerthemeut.sty
+++ b/beamerthemeut.sty
@@ -24,6 +24,7 @@
 \DeclareOptionBeamer{logo}{\PassOptionsToPackage{logo}{beamerthemelines}}
 \DeclareOptionBeamer{hidelogo}{\PassOptionsToPackage{hidelogo}{beamerthemelines}}
 
+\ExecuteOptionsBeamer{author}
 \ExecuteOptionsBeamer{page}
 \ExecuteOptionsBeamer{logo}
 
@@ -52,6 +53,7 @@
 \setbeamertemplate{title page institute and}[line] % default, space, comma, line
 
 \setbeamertemplate{section name separator}[text][2pt] % space, text
+\setbeamertemplate{subsection name separator}[text][2pt] % space, text
 
 
 \usecolortheme{ut}
diff --git a/lines-example.tex b/lines-example.tex
index 066d27d..933476d 100644
--- a/lines-example.tex
+++ b/lines-example.tex
@@ -2,7 +2,7 @@
 \usetheme[author,date,title,page,hidelogo]{lines}
 \usecolortheme{aptero}
 
-\title[Beamer lines]{Lines}
+\title[Lines beamer theme]{Lines}
 \subtitle{a line-based theme for beamer}
 \author[Benda]{Jan Benda}
 \institute[T\"ubingen]{Neuroethology, University of T\"ubingen}
@@ -360,18 +360,22 @@
 \end{frame}
 
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 
-\section{Section pages}
+\section{Sectioning pages}
+
+\subsection{Section page}
+
+\frame[plain]{\subsectionpage}
 
 \begin{frame}[fragile]{Section page}
-  Sectioning commands between the frames, like\\
+  Section commands between the frames, like\\
   \verb!\section{A new section}!\\
-  automaticallly create a special frame with the section number and title.
+  automaticallly create a special frame with section number and title.
 
   \begin{block}{No automatic section pages}
     \verb!\AtBeginSection{}!
   \end{block}
-  \begin{block}{Manual insertion of section page}
-    \verb!\frame[plain,c]{\sectionpage}!
+  \begin{block}{Manual insertion of a section page}
+    \verb!\frame[plain]{\sectionpage}!
   \end{block}
   \begin{block}{Colors/Fonts}
     \verb!\setbeamercolor{section name}{parent={titlelike}}!
@@ -380,10 +384,23 @@
   \end{block}
 \end{frame}
 
-\begin{frame}[fragile,c]{Subsection pages}
-  \begin{alertblock}{Not supported yet!}
-    Coming soon ...
-  \end{alertblock}
+\subsection{Subsection page}
+
+\frame[plain]{\subsectionpage}
+
+\begin{frame}[fragile]{Subsection pages}
+  After a subsection command\\
+  \verb!\subsection{A new subsection}!\\
+  you may want to insert a subsection page displaying the current
+  section and subsection numbers and titles:
+  \begin{block}{Subsection page}
+    \verb!\frame[plain]{\subsectionpage}!
+  \end{block}
+  \begin{block}{Colors/Fonts}
+    \verb!\setbeamercolor{subsection name}{parent={titlelike}}!
+    \verb!\setbeamercolor{subsection name separator}{parent={section name}}!
+    \verb!\setbeamercolor{subsection title}{parent={titlelike}}!
+  \end{block}
 \end{frame}
 
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 
diff --git a/ut-example.tex b/ut-example.tex
index 5e7f97d..5ddca66 100644
--- a/ut-example.tex
+++ b/ut-example.tex
@@ -1,7 +1,7 @@
 \documentclass[aspectratio=169,t]{beamer}
 \usetheme[author,date,title]{ut}
 
-\title{Beamer theme for the University of T\"ubingen}
+\title{A beamer theme for the University of T\"ubingen}
 \author[Benda]{Jan Benda}
 \institute[T\"ubingen]{Neuroethology, University of T\"ubingen}
 \date[2021]{March 2021}
@@ -22,7 +22,7 @@
       \verb!\documentclass[aspectratio=169,t]{beamer}!\\
       \verb!\usetheme[author,date,title,page]{ut}!
   \end{block}
-  Options select content of footline (defaults to \verb![author,page]!):
+  Options select content of footline (defaults to \verb![author,page,logo]!):
   \begin{itemize}
   \item \verb!author! / \verb!hideauthor!
   \item \verb!institute! / \verb!hideinstitute!
@@ -177,18 +177,47 @@
 \end{frame}
 
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%% 
-\section{Section pages}
+\section{Sectioning pages}
 
-\begin{frame}[fragile,c]{Section pages}
-  \begin{block}{Section page}
-    Sectioning commands between the frames, like\\
-    \verb!\section{A new section}!\\
-    automaticallly create a special frame with the section number and title.
+\subsection{Section page}
+
+\frame[plain]{\subsectionpage}
+
+\begin{frame}[fragile]{Section page}
+  Section commands between the frames, like\\
+  \verb!\section{A new section}!\\
+  automaticallly create a special frame with section number and title.
+
+  \begin{block}{No automatic section pages}
+    \verb!\AtBeginSection{}!
+  \end{block}
+  \begin{block}{Manual insertion of a section page}
+    \verb!\frame[plain]{\sectionpage}!
+  \end{block}
+  \begin{block}{Colors/Fonts}
+    \verb!\setbeamercolor{section name}{parent={titlelike}}!
+    \verb!\setbeamercolor{section name separator}{parent={section name}}!
+    \verb!\setbeamercolor{section title}{parent={titlelike}}!
+  \end{block}
+\end{frame}
+
+\subsection{Subsection page}
+
+\frame[plain]{\subsectionpage}
+
+\begin{frame}[fragile]{Subsection pages}
+  After a subsection command\\
+  \verb!\subsection{A new subsection}!\\
+  you may want to insert a subsection page displaying the current
+  section and subsection numbers and titles:
+  \begin{block}{Subsection page}
+    \verb!\frame[plain]{\subsectionpage}!
+  \end{block}
+  \begin{block}{Colors/Fonts}
+    \verb!\setbeamercolor{subsection name}{parent={titlelike}}!
+    \verb!\setbeamercolor{subsection name separator}{parent={section name}}!
+    \verb!\setbeamercolor{subsection title}{parent={titlelike}}!
   \end{block}
-  \vfill
-  \begin{alertblock}{Subsection pages}
-    Not supported yet! Coming soon ...
-  \end{alertblock}
 \end{frame}
 
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%