OptionalblendBlend mode of the fill. Possible values are defined in Fill.BLEND_MODE
OptionalcolorColor of the fill.
OptionalgradientGradient of the fill.
OptionalopacityOpacity of the fill. A number in interval [0, 1].
Type of the fill. Possible values are "color" and "gradient"
StaticALLOWED_StaticBLEND_StaticTYPE
An interface to represent fill