Is there a way to fill a node for n%? E.g. 50%
\documentclass[11pt]{article}
\usepackage{tikz}
\tikzset{
mystar/.style={
anchor=outer point 3,
draw,
inner sep=.15em,
star,
star points=5,
star point ratio=2.25
}
}
\begin{document}
\begin{tikzpicture}
\node[mystar, fill=yellow] {};
\end{tikzpicture}
\end{document}
