The color settings which are applied to a PointCloudInstance element, or one of its scans. 
   Namespace:   Autodesk.Revit.DB.PointClouds  
  Assembly:   RevitAPI  (in RevitAPI.dll) Version: 2015.0.0.0 (2015.0.0.0) 
  Since:  2014 
Syntax
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Remarks
 For different color modes (PointCloudColorMode), the color settings mean different things: 
 - for single color, color1 means the display color
 - for other modes (intensity, elevation), color1 and color2 form a gradient from min to max
 - for no overrides and normals, color1 and color2 are not used