beamer > beamercolorbox > Text with Shadow or Glow

• This is a "fun" project.
• I want to create a beamer presentation with a fancy title frame.
• The goal is to have a black title frame with "bight colorful" text on it that looks like neon text (glowing).
• It’s a bit inspired by the intro of the TV show "Stranger Things".
• Ideally, I want to stick to beamer’s beamercolorbox approach to build the title frame template.
• I found some (partly older) related questions but I was hoping that by now there is a simple solution available. There seems to be solutions available to generate this effect for boxes but not for text.
• Question: Any idea how to generate a "neon glow" for normal text on the title frame with tikz and friends?

---

documentclass{beamer}

usepackage{tikz}
% Potentially Useful Libraries
usetikzlibrary{
    shadows.blur, % "pgf-blur" package
    }

% Title of Presentation
title{Presentation Title}

% Definition of Title Frame
setbeamertemplate{title page}
    {
    begin{beamercolorbox}[center]{title}
        usebeamerfont{title}inserttitle
    end{beamercolorbox}
    }

% Definition of Font Color of Title (Used in "setbeamertemplate{title page}")    
setbeamercolor{title}{fg=pink} 

% Related
% https://tex.stackexchange.com/questions/315989
% https://tex.stackexchange.com/questions/401032
% https://tex.stackexchange.com/questions/493401
% https://tex.stackexchange.com/questions/315989
% https://tex.stackexchange.com/questions/446841

begin{document}

% Title Frame
setbeamercolor{background canvas}{bg=black}
begin{frame}
maketitle
end{frame}
setbeamercolor{background canvas}{bg=}

% Normal Frame
begin{frame}{Frame Title}
Text
end{frame}

end{document}

Related

• Adding shadow to font in beamer title
• Can Gaussian (or similar) blur be applied to Tikz text?
• How to apply the "glow" effect to a rectangle with tcolorbox?
• Adding shadow to font in beamer title
• overlapping shadow with tikz

documentclass[tikz,border=3mm]{standalone}
usepackage{contour}
begin{document}
begin{tikzpicture}
fill (-1,-1) rectangle (1,1);
 foreach xyz in {0.05,0.1,...,1.5}
 {begin{scope}[transparency group,opacity=.05]
 contourlength{xyz pt}
 path[font=Huge]
 node{contour{red}{Test}};
 end{scope}};
end{tikzpicture}
end{document}

documentclass{beamer}

usepackage{tikz}
usepackage{contour}
title{Presentation Title}

% Definition of Title Frame
setbeamertemplate{title page}
    {
    begin{beamercolorbox}[center]{title}
    begin{tikzpicture}
fill (-1,-1) rectangle (1,1);
 foreach xyz in {0.05,0.1,...,1.5}
 {begin{scope}[transparency group,opacity=.05]
 contourlength{xyz pt}
 path
 node{contour{red}{usebeamerfont{title}Hugeinserttitle}};
 end{scope}};
end{tikzpicture}
    end{beamercolorbox}
    }

% Definition of Font Color of Title (Used in "setbeamertemplate{title page}")    
setbeamercolor{title}{fg=black} 


begin{document}

% Title Frame
setbeamercolor{background canvas}{bg=black}
begin{frame}
maketitle
end{frame}
setbeamercolor{background canvas}{bg=}

% Normal Frame
begin{frame}{Frame Title}
Text
end{frame}

end{document}