Question: Is there API access to the "Change Color Table" for grayscale images?

In the ENVI UI, one can change from using a "Grayscale" for a single band to some other color table: Select the layer in the view, right click, and then "Change Color Table". It is mentioned on the Help page "Raster Layers". However, I cannot find any reference to an API for programmatically changing/setting the Color Table.

ENVIRasterLayer does not show a color table choice. One can set a "Quick_Stretch", however - implicitly for a grayscale.

Thanks for any input.