Available in five colors:
SILVER: Highly reflective, the reflective light is brighter than other colors to create a stronger light in dark or cloudy days.
Gold: Basically the same way adds a warm color to the image.
White: brightens shadows and creates a soft light It is not as bright as the silver surface so it can get closer to the subject.
Black: Subtract light and shadow specific areas.
Translucent: Used as a diffuser.They are usually left right on the subject to soften the suns natural light.