How can I modify title page so that it looks like it is in this video. Please seek to 16 seconds and watch title page. I do not have permission to post images. I liked this theme and I want to make a beamer theme that looks similar. I tried with beamercolorbox but I failed to position the box to the bottom.
Edit: Here is my minimum working example
\documentclass[xcolor=dvipsnames]{beamer}
\defbeamertemplate*{title page}{customized}[1][]
{
\usebeamerfont{subtitle}
\usebeamercolor[fg]{subtitle}
{\flushright
\setbeamercolor{author}{bg=white,fg=Red}
\usebeamerfont{author} \insertauthor\par
\usebeamerfont{institute}\insertinstitute\par }
\vspace{0.2in}
\setbeamercolor{postit}{fg=white,bg=YellowOrange}
\begin{beamercolorbox}[sep=1em,wd=1.062\textwidth,ht=3cm,dp=3cm,right]{postit}
\usebeamerfont{title} {\huge \inserttitle}\par
\usebeamerfont{subtitle} {\insertsubtitle}
\end{beamercolorbox}
}
\usecolortheme[named=YellowOrange]{structure}
\useoutertheme{infolines}
\setbeamertemplate{navigation symbols}{}
\institute{Harvard College Professor and\\ Johnstone Family Professor in Psychology, Harvard University}
\title{SAY WHAT?}
\subtitle{Linguistics as a Window to\\ Understanding the Brain}
\author{Steven Pinker}
\begin{document}
{
\setbeamertemplate{footline}{}
\begin{frame}
\titlepage
\end{frame}
}
\end{document}