png 100 80 overlap.png

color 1 0 0
sphere 0 0 -1 0.3
color 0 1 0
sphere .1 -.2 -1.2 0.5
color 0 0 1
sphere -.5 -.8 -3 1
color 1 1 1
sphere 0.2 -0.2 -.5 0.05

color 1 1 1
sun -1 -0.5 1