Color 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.
Referenced by: attributeColorInfo, Background, Color Ramp, ColormapInfo, colorStop, Dot Density Renderer, Effect Functions, Flow Renderer, heatmap colorStop, Simple Fill Symbol (esriSFS), Simple Line Symbol (esriSLS), Simple Marker Symbol (esriSMS), Text Symbol (esriTS)