The two yellow ones have a transparent png as the texture, one with it on both sides of the globe, one with it only on the outside. The white ones have no texture, again one with the color on both sides and one with the color on the outside.
Having the color/texture on both sides or just one doesn't seem to make a difference.
This is using a white light source in each of them (instead of making them a light). On all of the globes, the texture/color is at 70% opacity.
Now to figure out how the Light Diameter property corresponds to size.
