ShapeFill

Defines the fill options of the shape. Use these settings to apply a single-color or a gradient background to shapes in the Diagram.

Name	Type	Default	Description
color?	string		Defines the fill color. Accepts valid CSS colors.
gradient?	ShapeFillGradient		Defines the gradient fill of the shape.
opacity?	number	1	Defines the fill opacity. Ranges from 0 (completely transparent) to 1 (opaque).