prestemplate.sty

\usepackage{graphicx}
\usepackage{wrapfig}
\usepackage{amsmath}
\usepackage{textpos}
\usepackage{adjustbox}
\usepackage{booktabs}
\usepackage{multirow}

\titlegraphic{\begin{textblock*}{1.5cm}(1.5cm,-2.5cm)
   \includegraphics[width=8cm]{images/git_github.png}\end{textblock*}}

%Define your colours
%\definecolor{mycolor}{HTML}{htmlcode}
\definecolor{darkbg}{HTML}{f3f5f6}
\definecolor{titles}{HTML}{5e7359}
\definecolor{lighttext}{HTML}{293226}
\definecolor{emphasedark}{HTML}{c8eed4}
%\definecolor{emphaselight}{HTML}{f14d49}

%Create the palettes for each item type using the colors defined above
%\setbeamercolor{item}{fg=font foreground color,bg=font background color}
%background color
\setbeamercolor{background canvas}{bg=darkbg}
%main text
\setbeamercolor{normal text}{fg=lighttext}
%slides title
\setbeamercolor{frametitle}{fg=titles,bg=darkbg}
%main title
\setbeamercolor{title}{fg=titles,bg=darkbg}
\setbeamerfont{title}{size={\fontsize{16}{18}}}
\setbeamerfont{subtitle}{size={\fontsize{22}{24}}}
\setbeamercolor{local structure}{fg=emphasedark}
\setbeamercolor{item projected}{fg=titles,bg=white}
%bullets shape and color
\setbeamertemplate{itemize item}{\color{emphasedark}$\bullet$}
\setbeamertemplate{itemize subitem}{\color{emphasedark}\scriptsize{$\bullet$}}