# how to make put bold arrows between text

I am putting arrows next to text. I want to change their color and make them bold.

MWE:

    \documentclass{beamer}
\usepackage{tikz}
\begin{document}
\begin{frame}

\begin{itemize}
\item $\uparrow$ areal density
\item $\uparrow$ data rates
\end{itemize}

\end{frame}
\end{document}


is it possible to do this without adding \usetikzlibrary{arrows}

\documentclass{beamer}
\usepackage{marvosym}
\begin{document}
\begin{frame}[fragile]
\begin{itemize}
\item[\MVRightarrow] some thing
\item[\color{blue!50!green}\rotatebox{90}{\MVRightarrow}] areal density
\item[\color{red!70!cyan}{\rotatebox[origin=c]{-90}{\MVRightarrow}}] data rates
\end{itemize}
\end{frame}
\end{document}

• I need upward arrow. – NAASI May 25 '15 at 18:54
• @NAASI \rotatebox{90}{\MVRightarrow} – Fran May 25 '15 at 19:09
• Thankyou. Didn't know about \rotatebox{.} before – NAASI May 25 '15 at 19:29