Il est possible de modifier et de compiler cet exemple :
\documentclass[border=10pt]{standalone}
\usepackage{tkz-euclide}
\begin{document}
\begin{tikzpicture}
\tkzInit[xmin=-5,xmax=5,ymin=-4,ymax=6]
\tkzClip
\tkzDefPoints{-.5/0/P1,.5/0/P2}
\foreach \i [count=\j from 3] in {2,...,7}{%
\tkzDefShiftPoint[P\i]({45*(\i-1)}:1){P\j}}
\tkzClipPolygon[out](P1,P...,P8)
\tkzCalcLength(P1,P5)\tkzGetLength{r}
\begin{scope}[blend group=screen]
\foreach \i in {1,...,8}{%
\pgfmathparse{100-5*\i}
\tkzFillCircle[R,color=teal!%
\pgfmathresult](P\i,\r)}
\end{scope}
\end{tikzpicture}
\end{document}