ARCHICAD comes with several predefined Pen Sets. These are listed and managed Options > Element Attributes > Pens & Colors
or
Document > Pen Sets > Pens & Colors.
See Predefined Pen Sets for Specific Functions for an overview of the logic behind predefined pen sets.
You can just use the default pen set, or you can apply a different Pen Set for your project, depending on the purpose of the current output.
The following sections describe how to work with Pen Sets in ARCHICAD:
Transfer a Pen Set to Another Project
Automatic Pen Color Visibility Adjustment for Model Views