\usepackage{eso-pic}

\renewcommand\sfdefault{phv}
\renewcommand\familydefault{\sfdefault}
\usetheme{default}
\usepackage{color}
\useoutertheme{default}
\usepackage{texnansi}
\usepackage{marvosym}
%\definecolor{bottomcolour}{rgb}{0.32,0.3,0.38}
%\definecolor{middlecolour}{rgb}{0.08,0.08,0.16}
\definecolor{torgreen}{rgb}{0.8,1,0.16}
\setbeamerfont{title}{size=\Huge}
\setbeamercolor{structure}{fg=torgreen}
\setbeamertemplate{frametitle}[default]%[center]
\setbeamercolor{normal text}{bg=black, fg=white}
%\setbeamertemplate{background canvas}[vertical shading][bottom=bottomcolour, middle=middlecolour, top=black]

\setbeamertemplate{background canvas}{%
  \color{black!100}\rule{\paperwidth}{\paperheight}%
}

\setbeamertemplate{items}[circle]
\setbeamerfont{frametitle}{size=\huge}
\setbeamertemplate{navigation symbols}{} %no nav symbols

\setbeamertemplate{title page}
{
  \raisebox{\dimexpr\ht\strutbox-\height\relax}{\includegraphics[keepaspectratio,width=.3\textwidth]{images/tor-logo-root-design}}\hfill
  \begin{minipage}[t]{.69\textwidth}
    \begin{center}
      \begin{beamercolorbox}[sep=8pt,center]{title}
        \usebeamerfont{title}\inserttitle\par
      \end{beamercolorbox}
      \ifx\insertsubtitle\@empty
      \else
        \vskip2ex
        \usebeamerfont{subtitle}\insertsubtitle
      \fi
      \ifx\insertauthor\@empty
      \else
        \vskip2ex
        \usebeamerfont{author}\insertauthor
      \fi
      \ifx\insertdate\@empty
      \else
        \vskip2ex
        \usebeamerfont{date}\insertdate%
      \fi
    \end{center}
    \vfill
  \end{minipage}
}