ArcGIS Pro 3.0 API Reference Guide
ArcGIS.Core.CIM Namespace / CIMPictureFill Class / ColorSubstitutions Property

ColorSubstitutions Property (CIMPictureFill)
Gets or sets the color substitutions which allows colors in the image to be substituted with a different color.
Syntax
public CIMColorSubstitution[] ColorSubstitutions {get; set;}
Requirements

Target Platforms: Windows 11, Windows 10, Windows 8.1

ArcGIS Pro version: 2.0 or higher.
See Also