[Chimera-users] Coulombic Surface Coloring

Hello, I saw on the Chimera online manual that there is a Coulombic Surface Coloring function, which displays an approximate electrostatic potential without having to calculate a file with delphi etc. This sounds great and I would love to use the function. However, in the Tools > Surface/Binding Analysis menu, I don't find it. Is it something to be implemented in future versions of Chimera? Or is there a way of using it in the current release (I have version 1.3 build 2577 from December 9) Thanks a lot! Martin