Allows you to reference an existing color ramp that is available to an ArcGIS project.
It is essential that you author color ramps in a project with unique names because it is possible to have more than one color ramp with the same name. The index parameter does help if there are duplicate names, but you will need to manually determine and test for any redundancy.
ColorRamp (color_ramp_name, index)
The name of the color ramp as it appears in the application. The name is not case sensitive.
The index value of the color ramp given that there may be more than one color ramp with the same name.
The following line of code returns a color ramp with the name "Red to Yellow").
import arcpy cr = arcpy.mp.ColorRamp("Yellow to Red")