The scene has 3 square primitives enclosing to give it a room feeling- a back wall ( which is a mirror),
a left wall, and a floor.

There are two point light sources .. one to the left of the scene giving a blue light. The second
light source is a lamp like structure(cone)above the middle sphere, emitting a pinkish/reddish light.

The scene consists of 3 spheres(all transparent). The middle sphere has a blue ambient light. The leftmost has
green ambient light, and the rightmost has red ambient light. The shadows on the floor are formed correctly, as
can be noted by the pinkish pointlight above the middle sphere, which causes a concentric circle to appear on the floor
below. This is expected !