I want to change the line color of a pie chart in LaTeX so that the line color of the slices take the fill color.
Mini example:
\usepackage{pgf-pie}
\begin{document}
\begin{tikzpicture}
\pie[color={red, blue, yellow, green},
sum=auto, after number=,text=pin,
every only number node/.style={text=black}]{10/A,20/B,30/C,10/D}
\end{tikzpicture}
\end{document}
This has a black line color. How can I change it to the fill color of the slice?