To answer this question I actually installed Revit. What I see there - Revit does not have pen sets. All colours set manually by RGB or PANTONE. The system there is different. You just choose pen colour for your element. Also you can override colour if you want. But you cannot switch between pen sets - like in ArchiCAD, as in Revit there is no such a things like pen number. Also Revit doesn't have layers (where layers can have different colours like in AutoCAD).