\input{preamble-standalone.ltx}
\begin{document}

% Ex. No. 220 (Section 30.4 : Own style)

\tkzSetUpPoint[color=blue!50!white, fill=gray!20!red!50!white]
\tikzset{/tikz/mystyle/.style={
         color=blue!20!black,
         fill=blue!20}}
  \begin{tikzpicture}
    \tkzDefPoint(0,0){O}
    \tkzDefPoint(0,1){A}
    \tkzDrawPoints(O) % general style
    \tkzDrawPoints[mystyle,size=4](A) % my style
    \tkzLabelPoints(O,A)
\end{tikzpicture}

\end{document}
