When Seating Charts add-on is installed and activated, you will notice one new field when creating new or editing existing ticket type. This field is located all the way on the bottom and allows you to select the color this ticket type will be represent with on the seating charts. So, for example, if you are assigning this ticket ticket type to the standing area, the whole area will be colored with this color or if you are assigning this ticket type to the seating group or tables, seats color will match the one selected here.