ArcGIS Pro 3.0 API Reference Guide
ArcGIS.Core.CIM Namespace / CIMHeatMapRenderer Class / ColorScheme Property

ColorScheme Property (CIMHeatMapRenderer)
Gets or sets the color scheme of the heat map. Controls how smooth the color gradient appears. Must be either a continuous or multipart color ramp. If no color scheme is specified, a default color ramp will be used.
Syntax
public CIMColorRamp ColorScheme {get; set;}
Requirements

Target Platforms: Windows 11, Windows 10, Windows 8.1

ArcGIS Pro version: 2.0 or higher.
See Also