Code
fill = color(r=50, g=250, b=250)
c = circle(x=-100, y=0, r=50, fill=fill, stroke="none")
show(c)
fill = color(r=50, g=250, b=250)
c = circle(x=0, y=-100, r=50, fill=fill, stroke="none")
show(c)
fill = color(r=0, g=150, b=150)
c = circle(x=0, y=0, r=50, fill=fill, stroke="none")
show(c)
fill = color(r=50, g=250, b=250)
c = circle(x=100, y=0, r=50, fill=fill, stroke="none")
show(c)
fill = color(r=50, g=250, b=250)
c1 = circle(r=25, stroke_width=2)
c2 = circle(r=50, stroke_width=4)
c3 = circle(r=75, stroke_width=6)
c4 = circle(r=100, stroke_width=8)
c5 = circle(r=125, stroke_width=5)
show(c1, c2, c3, c4, c5)
c1 = color(r=255, g=0, b=0, a=0.5)
shape1 = circle(x=-50, y=0, r=100, fill=c1, stroke="none")
c = circle(x=0, y=100, r=50, fill=fill, stroke="none")
show(c)