Beamer: How to use "beamercolor" in a tikz picture

Question

How might it be possible to change the font color of a tikzpicture element to the value of a particular beamercolor, e.g. block title?-- For example:

\documentclass{beamer}
\usepackage{tikz}

\begin{document}

\frame{
\begin{tikzpicture}
    \draw (0, 5) node (n1) [text=block title] {I should be the same color as block text.};
    \draw (0, 0) node (n2) {I should be plain black text.};
    \path (n1) edge (n2);
\end{tikzpicture}
} 

\end{document}

Answer 1

You can use font={\usebeamercolor[fg]{block title}}. The reason for using font here is that \usebeamercolor as I understand it essentially inserts a \color{<color name>}, so you cannot use it as a colour name directly.

\documentclass{beamer}
\usepackage{tikz}

\begin{document}

\frame{
\begin{tikzpicture}
    \draw (0, 5) node (n1) [font={\usebeamercolor[fg]{block title}}] {I should be the same color as block text.};
    \draw (0, 0) node (n2) {I should be plain black text.};
    \path (n1) edge (n2);
\end{tikzpicture}
} 

\end{document}