beamerthemeFirebird.sty

\usepackage{amsmath}

\definecolor{headercolor}{HTML}{E9EDEE}
\definecolor{textcolor}{HTML}{666666}
\definecolor{lightbg}{HTML}{C2D0D3}
\definecolor{darkbg}{HTML}{8FA9AF}
\definecolor{darkbg2}{HTML}{C1CCD6}
\definecolor{blocktext}{HTML}{FFFFFF}
%775561
\definecolor{blockdark2}{HTML}{B6D6DD}
\definecolor{blockbg2}{HTML}{ECFCFF}
\definecolor{blocktext2}{HTML}{496268}
\setbeamercolor{footercolor}{bg = headercolor}
\setbeamercolor{headerleft}{bg = darkbg}
\setbeamercolor{headerright}{bg = darkbg2}

\setbeamerfont{title}{series=\bfseries,parent=structure}
\setbeamerfont{subtitle}{size=\small,series=\normalfont,parent=structure}

\setbeamertemplate{title page}
{
    \textbf{COMP4901O Competitive Programming in Cybersecurity II}\\
		\includegraphics[scale = 0.05]{weird_hline}
    \begin{beamercolorbox}[wd = \paperwidth]{}
    \vskip25pt
    \begin{center}
        \usebeamerfont{title}
        \inserttitle
        \\
        \usebeamerfont{subtitle}
        \insertsubtitle
    \end{center}
    \vspace{40pt}
            \leftskip = 1 cm
            \usebeamerfont{author}
            \insertauthor
            \\
            \usebeamerfont{date}
            \insertdate
    \end{beamercolorbox}
    \vfill

    \hfill
    \includegraphics[scale = 0.13]{firebird-logo}
}

\newcommand{\optSkipBeforeHeading}{\vskip8pt}
\newcommand{\optSkipBeforeWeirdBar}{\vskip-8pt}
\newcommand{\optSkipAfterWeirdBar}{\vskip-6pt}

\newcommand{\TitlePage}
{{
	\setbeamertemplate{headline}{}
	\setbeamertemplate{footline}{}
    \setbeamercolor{background canvas}{bg = headercolor}
    \begin{frame}[noframenumbering]
    \titlepage
    \end{frame}
    
}}
\setbeamercolor{frametitle}{fg=black}
\setbeamertemplate{frametitle}
{
    \vbox
    {
        \strut\bfseries\insertframetitle\\
        \optSkipBeforeWeirdBar
        \includegraphics[scale = 0.05]{weird_hline}
    }
    \optSkipAfterWeirdBar
}

\setbeamercolor{headingcolor}{fg=textcolor,bg=headercolor} 
\setbeamertemplate{headline}{%
\leavevmode%
  \hbox{%
    \begin{beamercolorbox}[wd = \paperwidth]{headingcolor}
     \hspace*{2ex} \raisebox{-.4\height}{\includegraphics[scale = 0.1]{firebird-icon}}\hyperlinkpresentationstart{Firebird CTF Team} \hfill
    \tiny{COMP4901O Competitive Programming in Cybersecurity II} \hspace*{1ex}
    \end{beamercolorbox}}
   \hbox{%
   \begin{beamercolorbox}[wd=.5\paperwidth,ht=2.25ex,dp=1ex,right]{headerleft}%
     \usebeamerfont{section in head/foot}\ \insertsectionhead\hspace*{2ex}
   \end{beamercolorbox}%
   \begin{beamercolorbox}[wd=.5\paperwidth,ht=2.25ex,dp=1ex,left]{headerright}%
     \usebeamerfont{subsection in head/foot}\hspace*{2ex}\insertsubsectionhead
   \end{beamercolorbox}}%
   \optSkipBeforeHeading%
  
}

\renewcommand{\framesubtitle}[1]{\par\smallskip\textbf{\large#1}\par}

%\setbeamertemplate{footline}{
%\hbox{
%\begin{beamercolorbox}[wd=.3\paperwidth,dp=0.4em]{footercolor}%
%\centering\insertshortauthor
%  \end{beamercolorbox}\begin{beamercolorbox}[wd=.3\paperwidth,dp=0.4em]{headerleft}\centering
%   \insertshorttitle
%   \end{beamercolorbox}\begin{beamercolorbox}[wd=.3\paperwidth,dp=0.4em]{footercolor}%
%     \centering\insertframenumber{} / inserttotalframenumber\hspace*{2ex}
%   \end{beamercolorbox}%
%   }
%}
\setbeamertemplate{footline}{
\hbox{
\begin{beamercolorbox}[wd=\paperwidth,right]{}%
     \insertframenumber{} / \inserttotalframenumber\hspace*{2ex}
   \end{beamercolorbox}%
   }
}

\setbeamertemplate{section page}{
  \begin{beamercolorbox}[sep=8pt,center,shadow=true,rounded=true]{footercolor}
    \usebeamerfont{title}\insertsectionhead\par%
  \end{beamercolorbox}
}

\setbeamertemplate{subsection page}{
  \begin{beamercolorbox}[sep=8pt,center,shadow=true,rounded=true]{footercolor}
    \usebeamerfont{title}\insertsubsectionhead\par%
  \end{beamercolorbox}
}

\setbeamertemplate{section in toc}[circle]
\setbeamertemplate{subsection in toc}[circle]

\setbeamertemplate{blocks}[rounded][shadow=false]


\newtheorem{insight}{Insight}


\makeatletter
\def\th@exercise{%
\normalfont % body font
\setbeamercolor{block title example}{bg=blockdark2,fg=blocktext2}
\setbeamercolor{block body example}{bg=blockbg2,fg=black}
\setbeamercolor{example text}{fg=blocktext}
\def\inserttheoremblockenv{exampleblock}
}

\AtBeginEnvironment{definition}{%
\setbeamercolor{block title example}{bg=blockdark2,fg=blocktext2}
\setbeamercolor{block body example}{bg=blockbg2,fg=black}
\setbeamercolor{example text}{fg=blocktext}
\def\inserttheoremblockenv{exampleblock}
}

\AtBeginEnvironment{corollary}{%
\setbeamercolor{block title example}{bg=blockdark2,fg=blocktext2}
\setbeamercolor{block body example}{bg=blockbg2,fg=black}
\setbeamercolor{example text}{fg=blocktext}
\def\inserttheoremblockenv{exampleblock}
}

\AtBeginEnvironment{example}{
\setbeamercolor{block title example}{bg=darkbg,fg=blocktext}
\setbeamercolor{block body example}{bg=lightbg,fg=black}
\setbeamercolor{example text}{fg=blocktext}
\def\inserttheoremblockenv{exampleblock}
}


\AtBeginEnvironment{theorem}{
\setbeamercolor{block title example}{bg=darkbg,fg=blocktext}
\setbeamercolor{block body example}{bg=lightbg,fg=black}
\setbeamercolor{example text}{fg=blocktext}
\def\inserttheoremblockenv{exampleblock}
}
\def\th@proofn{%
\normalfont % body font
\setbeamercolor{block title example}{bg=darkbg,fg=blocktext}
\setbeamercolor{block body example}{bg=lightbg,fg=black}
\setbeamercolor{example text}{fg=blocktext}
\def\inserttheoremblockenv{exampleblock}
}

\makeatother
\theoremstyle{proofn}
\newtheorem{proofn}[theorem]{Proof}
\theoremstyle{exercise}
\newtheorem{exercise}[theorem]{Exercise}
\newtheorem{claim}[theorem]{Claim}
\newtheorem{remark}[theorem]{Remark}

\setbeamertemplate{bibliography item}{\insertbiblabel} % Numbers for references
% If you have more than one page of references, you want to tell beamer
% to put the continuation section label from the second slide onwards
\setbeamertemplate{frametitle continuation}[from second]
% Now get rid of all the colours
\setbeamercolor*{bibliography entry title}{fg=black}
\setbeamercolor*{bibliography entry author}{fg=black}
\setbeamercolor*{bibliography entry location}{fg=black}
\setbeamercolor*{bibliography entry note}{fg=black}
\setbeamercolor*{enumerate item}{fg=black}