I would like to depict the buried surface area between two chains. I have used "measure buriedarea" to measure it, and I can use "surface" to display the surfaces of either set of atoms, but I'd like to depict the surface of one of the chains, highlighting the region buried by the other chain. 

Is there a way to do this in ChimeraX? 

If not, does anyone have a recommendation as to how to achieve this? Perhaps by pre-computing the surfaces in another program?

Thanks in advance!

Cheers,
Alexis