To configure Kitchen Tickets Printing Default Modifiers Black and Selected Modifiers Red, navigate to Kitchen Setup under Kitchen / Dining Room.
Scroll to the Printed Tickets. Select Yes for the option Print Default Modifiers Black.
After configuring default modifiers to black, they will appear like Lettuce, Pico de Gallo, Guacamole, and Sour Cream below. The modifiers in Red are those that were added onto the item.