Changing the default highlight and selection style for a MeshVS_Mesh

Hello forum, I'm not able to change the default styles of mesh highlight and selection (OCC 7.3.0). See the attached pictures, showing a surface mesh, an element with highlight and a few elements selected. The mesh presentation builder has been added to the MeshVS_Mesh object with the flag "treat as highlighter" = true. How the highlight and selection styles could be changed? Despite several attempts I've not been able to find a solution. Thanks in advance. Giovanni