OptionalcolorColor is represented as a four-element array. The four elements represent values for red, green, blue, and alpha in that order. Values range from 0 through 255. If color is undefined for a symbol, the color value is null.
OptionalstyleThe line style.
The type of symbol. See SymbolJsonType.
OptionalwidthNumeric value indicating the width of the line in pixels.
Simple line symbols can be used to symbolize polyline geometries or outlines for polygon fills.
See https://developers.arcgis.com/web-map-specification/objects/esriSLS_symbol/.