OptionalcolorColor is represented as a three or four-element array.
OptionalextensionA size in points by which to extend edges beyond their original end points.
OptionalsizeEdge size in points, positive only.
OptionaltransparencyThe value has to lie between 100 (full transparency) and 0 (full opacity).
The type of edge visualization. Value of this property must be sketch.
The sketch edge rendering configuration of a symbol layer. Edges of type sketch are rendered with a hand-drawn look in mind.