Correct. Right now I am looking for a method of creating a RGB raster. I suppose with a lot of work I could do it manually but ArcMap provides a lot of help for example specifying the # of breaks and calculating the break points.
I haven't seen any programmatic functions similar to this so I am wondering if it is even possible.
Right now I have a application (ArcGIS Runtime 10.2.7) that does not support Raster Renderers (where color ramps would be possible). So I have a wonky workaround where I convert a kernel density to a shape file and then I can apply a Feature Renderer to it in ArcGIS runtime to support the color ramp.
I think we would get better results if the density could be outputted to a image file with the color ramp settings applied.