[PyMOL] How to color stick and surface representation separately

[sunyeping <sun...@al...>]

Dear all,

I color a protein as blue, display it by surface and cartoon simultaneously, and set the surface transperant so that the cartoon representation inside the surface can be seen. I display one residue as stick. I want to color the stick by element, but keep the surface representation as blue. However, I don't know how to do this. I can color the residue (please see the  Gln in the yellow circle at https://drive.google.com/open?id=1bviFQGUKgqLdbE-cUNDtzDZSdabc0N4Z), but both the stick and the surface representations are colored by element. Could anyone tell me how to color stick representation of this Gln by element but keep its surface representation as blue?

Thank you in advance
Yeping