I have read the "Smart Mapping" Guide about how to set a renderer, but I cannot find a list of possible renderers, nor can I find how to set custom parameters like a polygon border with a chosen weight and color with no fill. Is there a detailed list somewhere? I don't see it in the docs. I've tried {"color":[208,32,144]} in map.add_layer( ) for example. That passes with no error, but the polygons show up blue (ignoring my suggested fuchsia-pink color).
I'm inclined to believe it's possible, since line [18] of Using and updating GIS content | ArcGIS for Developers displays an example including such symbology parameters.