diff --git a/beamercolorthemeaptero.sty b/beamercolorthemeaptero.sty
index 27d41f8..9e75ddc 100644
--- a/beamercolorthemeaptero.sty
+++ b/beamercolorthemeaptero.sty
@@ -4,11 +4,27 @@
 %
 % 1. under the LaTeX Project Public License and/or
 % 2. under the GNU Public License.
-
-\ProvidesPackage{beamercolorthemelines}[2021/02/28 color theme for lines inner and outer beamer theme]
-
-\colorlet{darkred}{red!70!black}
-\colorlet{darkblue}{blue!70!black}
+%
+% "aptero" is a nick name for "Apteronotus" - a genus of weakly electric fish.
+
+\ProvidesPackage{beamercolorthemeaptero}[2021/02/28 color theme for lines inner and outer beamer theme]
+
+% muted colors:
+\definecolor{red}{rgb}{0.753,0.153,0.090}
+\definecolor{orange}{rgb}{0.969,0.502,0.090}
+\definecolor{yellow}{rgb}{0.941,0.843,0.188}
+\definecolor{lightgreen}{rgb}{0.667,0.718,0.106}
+\definecolor{green}{rgb}{0.251,0.502,0.125}
+\definecolor{darkgreen}{rgb}{0.000,0.439,0.188}
+\definecolor{cyan}{rgb}{0.251,0.655,0.529}
+\definecolor{lightblue}{rgb}{0.000,0.529,0.592}
+\definecolor{blue}{rgb}{0.125,0.376,0.655}
+\definecolor{purple}{rgb}{0.325,0.216,0.608}
+\definecolor{magenta}{rgb}{0.529,0.216,0.439}
+\definecolor{pink}{rgb}{0.816,0.188,0.314}
+\definecolor{white}{rgb}{1.000,1.000,1.000}
+\definecolor{gray}{rgb}{0.627,0.627,0.627}
+\definecolor{black}{rgb}{0.000,0.000,0.000}
 
 \mode<presentation>
 
@@ -17,37 +33,46 @@
 \setbeamercolor{normal text}{fg=black, bg=}
 \setbeamercolor{math text}{parent={normal text}}
 
-\setbeamercolor{structure}{fg=darkblue}
-\setbeamercolor{alerted text}{fg=darkred}
+\setbeamercolor{structure}{fg=blue}
+\setbeamercolor{alerted text}{fg=red}
 
-\setbeamercolor{titlelike}{parent={normal text}}
+\setbeamercolor{titlelike}{parent={normal text}, fg=blue}
 
 \setbeamercolor{frametitle}{parent={titlelike}}
-\setbeamercolor{frametitle line}{fg=darkblue}
+\setbeamercolor{frametitle line}{fg=blue}
 
 \setbeamercolor{item}{parent={normal text}}
 
-\setbeamercolor{block title}{fg=white, bg=black!70}
+\setbeamercolor{block title}{fg=white, bg=blue}
 \setbeamercolor{block body}{fg=normal text.fg, bg=black!10}
 
-\setbeamercolor{block title example}{parent={block title}, bg=darkblue}
+\setbeamercolor{block title alerted}{parent={block title}, bg=red}
+\setbeamercolor{block body alerted}{parent={block body}, fg=red}
+
+\setbeamercolor{block title example}{parent={block title}, bg=lightgreen}
 \setbeamercolor{block body example}{parent={block body}}
 
-\setbeamercolor{block title alerted}{parent={block title}, bg=darkred}
-\setbeamercolor{block body alerted}{parent={block body}, fg=darkred}
+\addtobeamertemplate{proof begin}{%
+  \setbeamercolor{block title}{fg=white, bg=green}
+}{}
+
+\addtobeamertemplate{theorem begin}{%
+  \setbeamercolor{block title}{fg=white, bg=orange}
+}{}
 
 \setbeamercolor{section in toc}{parent={normal text}}
 \setbeamercolor{subsection in toc}{parent={normal text}}
 
-\setbeamercolor{title}{parent={titlelike}, fg=darkred}
+\setbeamercolor{title}{parent={titlelike}, fg=red}
 \setbeamercolor{author}{parent={normal text}}
 \setbeamercolor{institute}{parent={normal text}}
 
 \setbeamercolor{title page}{parent={normal text}}
-\setbeamercolor{title page line}{fg=darkred}
+\setbeamercolor{title page graphic line}{fg=red}
+\setbeamercolor{title page title line}{fg=red}
 
 \setbeamercolor{section name}{parent={titlelike}}
-\setbeamercolor{section name separator}{parent={section name}, fg=darkblue}
+\setbeamercolor{section name separator}{parent={section name}}
 \setbeamercolor{section title}{parent={titlelike}}
 
 % outer colors:
@@ -60,7 +85,7 @@
 
 % hyper ref colors:
 
-\hypersetup{colorlinks=true, allcolors=black, urlcolor=darkblue}
+\hypersetup{colorlinks=true, allcolors=black, urlcolor=blue}
 
 \mode
 <all>
diff --git a/beamerfontthemelines.sty b/beamerfontthemelines.sty
index 3793267..ecfd5c8 100644
--- a/beamerfontthemelines.sty
+++ b/beamerfontthemelines.sty
@@ -20,6 +20,7 @@
 \setbeamerfont{frametitle}{size=\LARGE}
 
 \setbeamerfont{title}{size=\LARGE, shape=\bfseries}
+\setbeamerfont{subtitle}{size=\Large, shape=\bfseries}
 \setbeamerfont{author}{size=\Large}
 \setbeamerfont{institute}{size=\normalsize}
 
diff --git a/beamerinnerthemelines.sty b/beamerinnerthemelines.sty
index 0c23584..91a20a7 100644
--- a/beamerinnerthemelines.sty
+++ b/beamerinnerthemelines.sty
@@ -7,10 +7,17 @@
 
 \ProvidesPackage{beamerinnerthemelines}[2021/02/28 inner theme for beamer with lines in title page]
 
-\mode<presentation>
-
 \RequirePackage{tikz}
 
+% \titlelogo command:
+\mode<all>{
+  \newcommand\titlelogo[1]{\def\inserttitlelogo{#1}}
+  \titlelogo{}
+}
+
+
+\mode<presentation>
+
 
 % itemize and enumerate symbols:
 \defbeamertemplate{itemize item}{arrow}{%
@@ -28,17 +35,29 @@
 
 %%%%% title page %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 
-\defbeamertemplate{title page line}{default}[1][1ex]%
+\defbeamertemplate{title page graphic line}{default}[1][1ex]%
+{
+  \ifbeamercolorempty[fg]{title page graphic line}{}{%
+    \nointerlineskip%
+    \begin{beamercolorbox}[wd=1\textwidth,dp=0pt,ht=#1,sep=0pt]{title page graphic line}%
+      \rule{1\linewidth}{#1}%
+    \end{beamercolorbox}%
+  }%
+}
+
+\setbeamertemplate{title page graphic line}[default][1.5ex]
+
+\defbeamertemplate{title page title line}{default}[1][1ex]%
 {
-  \ifbeamercolorempty[fg]{title page line}{}{%
+  \ifbeamercolorempty[fg]{title page title line}{}{%
     \nointerlineskip%
-    \begin{beamercolorbox}[wd=1\textwidth,dp=0pt,ht=#1,sep=0pt]{title page line}%
+    \begin{beamercolorbox}[wd=1\textwidth,dp=0pt,ht=#1,sep=0pt]{title page title line}%
       \rule{1\linewidth}{#1}%
     \end{beamercolorbox}%
   }%
 }
 
-\setbeamertemplate{title page line}[default][1.5ex]
+\setbeamertemplate{title page title line}[default][0.2ex]
 
 \defbeamertemplate{title page author and}{space}{\def\beamer@andtitle{\quad}}
 \defbeamertemplate{title page author and}{comma}{\def\beamer@andtitle{,\quad}}
@@ -47,38 +66,114 @@
 
 \setbeamertemplate{title page author and}[line]
 
+\defbeamertemplate{title page institute and}{default}{}
 \defbeamertemplate{title page institute and}{space}{\def\beamer@andinst{\quad}}
 \defbeamertemplate{title page institute and}{comma}{\def\beamer@andinst{,\quad}}
 \defbeamertemplate{title page institute and}{line}{\def\beamer@andinst{$\;\;\vert\;\;\;$}}
 
 \setbeamertemplate{title page institute and}[line]
 
-% title page: lines
-\defbeamertemplate*{title page}{lines}
+% title page: leftlines
+\defbeamertemplate*{title page}{leftlines}
 {
   \vbox{}
-  \includegraphics[height=6ex]{UT_MNF_RGB}\\[1.2ex]
-  \usebeamertemplate{frametitle line}%
-  \vspace{1ex}
-  {\usebeamercolor[fg]{titlegraphic}\inserttitlegraphic\par}
-  \usebeamertemplate{title page line}%
+  % title logo with line:
+  \ifx\inserttitlelogo\@empty\else%
+    \begin{beamercolorbox}[wd=\linewidth]{titlelogo}
+      \inserttitlelogo%
+    \end{beamercolorbox}%
+    \vspace{1.2ex}
+    \usebeamertemplate{frametitle line}%
+    \vspace{1ex}
+  \fi
+  % title graphic:
+  \ifx\inserttitlegraphic\@empty\else%
+    \begin{beamercolorbox}[wd=\linewidth]{titlegraphic}
+      \inserttitlegraphic%
+    \end{beamercolorbox}%
+    \usebeamertemplate{title page graphic line}%
+  \fi%
   \vfill\vfill\vfill
+  % title:
   \begin{beamercolorbox}{title}
     \usebeamerfont{title}\inserttitle\par%
   \end{beamercolorbox}%
-  \vfill\vfill
+  % subtitle:
+  \ifx\insertsubtitle\@empty\else%
+    \vspace{1ex}
+    \begin{beamercolorbox}{subtitle}
+      \usebeamerfont{subtitle}\insertsubtitle\par%
+    \end{beamercolorbox}%
+  \fi%
+  \vfill
+  \usebeamertemplate{title page title line}%
+  \vfill
+  % author:
   \begin{beamercolorbox}{author}
     \usebeamertemplate{title page author and}%
     \usebeamerfont{author}\insertauthor
   \end{beamercolorbox}
   \vfill
+  % institute and date:
   \begin{beamercolorbox}{institute}
     \usebeamertemplate{title page institute and}%
     \usebeamerfont{institute}\insertinstitute
+    \hfill
+    \usebeamerfont{date}\insertdate
+  \end{beamercolorbox}
+}
+
+% title page: centerlines
+\defbeamertemplate*{title page}{centerlines}
+{
+  \vbox{}
+  % title logo with line:
+  \ifx\inserttitlelogo\@empty\else%
+    \begin{beamercolorbox}[wd=\linewidth,center]{titlelogo}
+      \inserttitlelogo%
+    \end{beamercolorbox}%
+    \vspace{1.2ex}
+    \usebeamertemplate{frametitle line}%
+    \vspace{1ex}
+  \fi
+  % title graphic:
+  \ifx\inserttitlegraphic\@empty\else%
+    \begin{beamercolorbox}[wd=\linewidth,center]{titlegraphic}
+      \inserttitlegraphic%
+    \end{beamercolorbox}%
+    \usebeamertemplate{title page graphic line}%
+  \fi%
+  \vfill\vfill\vfill
+  % title:
+  \begin{beamercolorbox}[center]{title}
+    \usebeamerfont{title}\inserttitle\par%
+  \end{beamercolorbox}%
+  % subtitle:
+  \ifx\insertsubtitle\@empty\else%
+    \vspace{1ex}
+    \begin{beamercolorbox}[center]{subtitle}
+      \usebeamerfont{subtitle}\insertsubtitle\par%
+    \end{beamercolorbox}%
+  \fi%
+  \vfill
+  \usebeamertemplate{title page title line}%
+  \vfill
+  % author:
+  \begin{beamercolorbox}[center]{author}
+    \usebeamertemplate{title page author and}%
+    \usebeamerfont{author}\insertauthor
+  \end{beamercolorbox}
+  \vfill
+  % institute and date:
+  \begin{beamercolorbox}[center]{institute}
+    \usebeamertemplate{title page institute and}%
+    \usebeamerfont{institute}\insertinstitute
+    \hfill
+    \usebeamerfont{date}\insertdate
   \end{beamercolorbox}
 }
 
-\setbeamertemplate{title page}[lines]
+\setbeamertemplate{title page}[leftlines]
 
 
 %%%%% section page %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
@@ -110,7 +205,7 @@
     \end{column}
     \begin{column}{0.9\textwidth}
       \usebeamerfont{section title}%
-      {\usebeamercolor[fg]{section title} \insertsection}%
+      {\usebeamercolor[fg]{section title}\hypersetup{allcolors=.}\insertsection}%
     \end{column}
   \end{columns}
 }
diff --git a/beamerouterthemelines.sty b/beamerouterthemelines.sty
index a3defe2..d7177a4 100644
--- a/beamerouterthemelines.sty
+++ b/beamerouterthemelines.sty
@@ -89,7 +89,6 @@
   {\usebeamercolor[fg]{footline separator}$\;\;\;$}}
 
 \setbeamertemplate{footline separator}[text][0.5pt]
-%\setbeamertemplate{footline separator}[space]
 
 % footline:
 \defbeamertemplate{footline}{lines}{%
@@ -173,6 +172,7 @@
     \insertframetitle\strut
   \end{beamercolorbox}%
   \usebeamertemplate{frametitle line}%
+  \vspace{-1ex}
 }
 \defbeamertemplate{frametitle}{boxlinelogo}%
 {
@@ -187,6 +187,7 @@
     \fi%
   \end{beamercolorbox}%
   \usebeamertemplate{frametitle line}%
+  \vspace{-1ex}
 }
 
 \setbeamertemplate{frametitle}[boxlinelogo]
diff --git a/beamerthemelines.sty b/beamerthemelines.sty
new file mode 100644
index 0000000..9ccc600
--- /dev/null
+++ b/beamerthemelines.sty
@@ -0,0 +1,34 @@
+% Copyright 2021 by Jan Benda
+%
+% This file may be distributed and/or modified
+%
+% 1. under the LaTeX Project Public License and/or
+% 2. under the GNU Public License.
+
+\ProvidesPackage{beamerthemelines}[2021/02/28 theme for beamer with lines]
+
+% pass options to outer lines theme:
+\DeclareOptionBeamer{author}{\PassOptionsToPackage{author}{beamerouterthemelines}}
+\DeclareOptionBeamer{hideauthor}{\PassOptionsToPackage{hideauthor}{beamerouterthemelines}}
+\DeclareOptionBeamer{institute}{\PassOptionsToPackage{}{beamerouterthemelines}}
+\DeclareOptionBeamer{hideinstitute}{\PassOptionsToPackage{}{beamerouterthemelines}}
+\DeclareOptionBeamer{date}{\PassOptionsToPackage{date}{beamerouterthemelines}}
+\DeclareOptionBeamer{hidedate}{\PassOptionsToPackage{hidedate}{beamerouterthemelines}}
+\DeclareOptionBeamer{title}{\PassOptionsToPackage{title}{beamerouterthemelines}}
+\DeclareOptionBeamer{hidetitle}{\PassOptionsToPackage{hidetitle}{beamerouterthemelines}}
+\DeclareOptionBeamer{page}{\PassOptionsToPackage{page}{beamerouterthemelines}}
+\DeclareOptionBeamer{hidepage}{\PassOptionsToPackage{hidepage}{beamerouterthemelines}}
+\DeclareOptionBeamer{logo}{\PassOptionsToPackage{logo}{beamerouterthemelines}}
+\DeclareOptionBeamer{hidelogo}{\PassOptionsToPackage{hidelogo}{beamerouterthemelines}}
+
+\ProcessOptionsBeamer
+
+
+\mode<presentation>
+
+\useinnertheme{lines}
+\useoutertheme{lines}
+\usefonttheme{lines}
+\usecolortheme{aptero}
+
+\mode<all>
\ No newline at end of file